--- a/browser/components/shell/src/nsWindowsShellService.cpp
+++ b/browser/components/shell/src/nsWindowsShellService.cpp
@@ -331,17 +331,16 @@ nsWindowsShellService::ShortcutMaintenan
   appHelperPath.AppendLiteral(" /UpdateShortcutAppUserModelIds");
 
   return LaunchHelper(appHelperPath);
 }
 
 bool
 nsWindowsShellService::IsDefaultBrowserVista(bool* aIsDefaultBrowser)
 {
-#if MOZ_WINSDK_TARGETVER >= MOZ_NTDDI_LONGHORN
   IApplicationAssociationRegistration* pAAR;
   
   HRESULT hr = CoCreateInstance(CLSID_ApplicationAssociationRegistration,
                                 NULL,
                                 CLSCTX_INPROC,
                                 IID_IApplicationAssociationRegistration,
                                 (void**)&pAAR);
 
@@ -350,17 +349,16 @@ nsWindowsShellService::IsDefaultBrowserV
     hr = pAAR->QueryAppIsDefaultAll(AL_EFFECTIVE,
                                     APP_REG_NAME,
                                     &res);
     *aIsDefaultBrowser = res;
 
     pAAR->Release();
     return true;
   }
-#endif  
   return false;
 }
 
 NS_IMETHODIMP
 nsWindowsShellService::IsDefaultBrowser(bool aStartupCheck,
                                         bool* aIsDefaultBrowser)
 {
   // If this is the first browser window, maintain internal state that we've

--- a/configure.in
+++ b/configure.in
@@ -974,18 +974,16 @@ EOF
         AC_MSG_RESULT("yes")
     else
         AC_MSG_RESULT("no")
         AC_MSG_ERROR([You are targeting Windows version 0x$MOZ_WINSDK_TARGETVER, but your SDK only supports up to version $MOZ_WINSDK_MAXVER. Install and use an updated SDK, or target a lower version using --with-windows-version. Alternatively, try running the Windows SDK Configuration Tool and selecting a newer SDK. See https://developer.mozilla.org/En/Windows_SDK_versions for more details on fixing this.])
     fi
 
     AC_DEFINE_UNQUOTED(MOZ_WINSDK_TARGETVER,0x$MOZ_WINSDK_TARGETVER)
     # Definitions matching sdkddkver.h
-    AC_DEFINE_UNQUOTED(MOZ_NTDDI_WS03, 0x05020000)
-    AC_DEFINE_UNQUOTED(MOZ_NTDDI_LONGHORN, 0x06000000)
     AC_DEFINE_UNQUOTED(MOZ_NTDDI_WIN7, 0x06010000)
     ;;
 esac
 
 AC_PROG_CPP
 AC_PROG_CXXCPP
 
 if test -n "$_WIN32_MSVC"; then

--- a/dom/plugins/ipc/PluginModuleChild.cpp
+++ b/dom/plugins/ipc/PluginModuleChild.cpp
@@ -620,17 +620,17 @@ PluginModuleChild::DeinitGraphics()
 #endif
 }
 
 bool
 PluginModuleChild::AnswerNP_Shutdown(NPError *rv)
 {
     AssertPluginThread();
 
-#if defined XP_WIN && MOZ_WINSDK_TARGETVER >= MOZ_NTDDI_LONGHORN
+#if defined XP_WIN
     mozilla::widget::StopAudioSession();
 #endif
 
     // the PluginModuleParent shuts down this process after this RPC
     // call pops off its stack
 
     *rv = mShutdownFunc ? mShutdownFunc() : NPERR_NO_ERROR;
 
@@ -684,17 +684,17 @@ PluginModuleChild::AnswerNPP_GetSitesWit
     return true;
 }
 
 bool
 PluginModuleChild::RecvSetAudioSessionData(const nsID& aId,
                                            const nsString& aDisplayName,
                                            const nsString& aIconPath)
 {
-#if !defined XP_WIN || MOZ_WINSDK_TARGETVER < MOZ_NTDDI_LONGHORN
+#if !defined XP_WIN
     NS_RUNTIMEABORT("Not Reached!");
     return false;
 #else
     nsresult rv = mozilla::widget::RecvAudioSessionData(aId, aDisplayName, aIconPath);
     NS_ENSURE_SUCCESS(rv, true); // Bail early if this fails
 
     // Ignore failures here; we can't really do anything about them
     mozilla::widget::StartAudioSession();

--- a/dom/plugins/ipc/PluginModuleParent.cpp
+++ b/dom/plugins/ipc/PluginModuleParent.cpp
@@ -771,17 +771,17 @@ PluginModuleParent::NP_Initialize(NPNets
     if (mShutdown) {
         *error = NPERR_GENERIC_ERROR;
         return NS_ERROR_FAILURE;
     }
 
     if (!CallNP_Initialize(error))
         return NS_ERROR_FAILURE;
 
-#if defined XP_WIN && MOZ_WINSDK_TARGETVER >= MOZ_NTDDI_LONGHORN
+#if defined XP_WIN
     // Send the info needed to join the chrome process's audio session to the
     // plugin process
     nsID id;
     nsString sessionName;
     nsString iconPath;
 
     if (NS_SUCCEEDED(mozilla::widget::GetAudioSessionData(id, sessionName,
                                                           iconPath)))

--- a/hal/windows/WindowsBattery.cpp
+++ b/hal/windows/WindowsBattery.cpp
@@ -45,27 +45,24 @@
 
 using namespace mozilla::dom::battery;
 
 namespace mozilla {
 namespace hal_impl {
 
 static nsCOMPtr<nsITimer> sUpdateTimer;
 
-#if MOZ_WINSDK_TARGETVER >= MOZ_NTDDI_LONGHORN
 /* Power Event API is Vista or later */
 typedef HPOWERNOTIFY (WINAPI *REGISTERPOWERSETTINGNOTIFICATION) (HANDLE, LPCGUID, DWORD);
 typedef BOOL (WINAPI *UNREGISTERPOWERSETTINGNOTIFICATION) (HPOWERNOTIFY);
 static REGISTERPOWERSETTINGNOTIFICATION sRegisterPowerSettingNotification = nsnull;
 static UNREGISTERPOWERSETTINGNOTIFICATION sUnregisterPowerSettingNotification = nsnull;
 static HPOWERNOTIFY sPowerHandle = nsnull;
 static HPOWERNOTIFY sCapacityHandle = nsnull;
 static HWND sHWnd = nsnull;
-#endif
-
 
 static bool
 IsVistaOrLater()
 {
   OSVERSIONINFO info;
 
   ZeroMemory(&info, sizeof(OSVERSIONINFO));
   info.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
@@ -86,38 +83,35 @@ UpdateHandler(nsITimer* aTimer, void* aC
   if (sLastInfo.level() != currentInfo.level() ||
       sLastInfo.charging() != currentInfo.charging() ||
       sLastInfo.remainingTime() != currentInfo.remainingTime()) {
     hal::NotifyBatteryChange(currentInfo);
     sLastInfo = currentInfo;
   }
 }
 
-#if MOZ_WINSDK_TARGETVER >= MOZ_NTDDI_LONGHORN
 static
 LRESULT CALLBACK
 BatteryWindowProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam) {
   if (msg != WM_POWERBROADCAST || wParam != PBT_POWERSETTINGCHANGE) {
     return DefWindowProc(hwnd, msg, wParam, lParam);
   }
 
   hal::BatteryInformation currentInfo;
 
   // Since we need update remainingTime, we cannot use LPARAM.
   hal_impl::GetCurrentBatteryInformation(&currentInfo);
 
   hal::NotifyBatteryChange(currentInfo);
   return TRUE;
 }
-#endif
 
 void
 EnableBatteryNotifications()
 {
-#if MOZ_WINSDK_TARGETVER >= MOZ_NTDDI_LONGHORN
   if (IsVistaOrLater()) {
     // RegisterPowerSettingNotification is from Vista or later.
     // Use this API if available.
     HMODULE hUser32 = GetModuleHandleW(L"USER32.DLL");
     if (!sRegisterPowerSettingNotification)
       sRegisterPowerSettingNotification = (REGISTERPOWERSETTINGNOTIFICATION)
         GetProcAddress(hUser32, "RegisterPowerSettingNotification");
     if (!sUnregisterPowerSettingNotification)
@@ -158,17 +152,16 @@ EnableBatteryNotifications()
       sRegisterPowerSettingNotification(sHWnd,
                                         &GUID_ACDC_POWER_SOURCE,
                                         DEVICE_NOTIFY_WINDOW_HANDLE);
     sCapacityHandle =
       sRegisterPowerSettingNotification(sHWnd,
                                         &GUID_BATTERY_PERCENTAGE_REMAINING,
                                         DEVICE_NOTIFY_WINDOW_HANDLE);
   } else
-#endif
   {
     // for Windows 2000 and Windwos XP.  If we remove Windows XP support,
     // we should remove timer-based power notification
     sUpdateTimer = do_CreateInstance(NS_TIMER_CONTRACTID);
     if (sUpdateTimer) {
       sUpdateTimer->InitWithFuncCallback(UpdateHandler,
                                          nsnull,
                                          Preferences::GetInt("dom.battery.timer",
@@ -176,34 +169,32 @@ EnableBatteryNotifications()
                                          nsITimer::TYPE_REPEATING_SLACK);
     } 
   }
 }
 
 void
 DisableBatteryNotifications()
 {
-#if MOZ_WINSDK_TARGETVER >= MOZ_NTDDI_LONGHORN
   if (IsVistaOrLater()) {
     if (sPowerHandle) {
       sUnregisterPowerSettingNotification(sPowerHandle);
       sPowerHandle = nsnull;
     }
 
     if (sCapacityHandle) {
       sUnregisterPowerSettingNotification(sCapacityHandle);
       sCapacityHandle = nsnull;
     }
 
     if (sHWnd) {
       DestroyWindow(sHWnd);
       sHWnd = nsnull;
     }
   } else
-#endif
   {
     if (sUpdateTimer) {
       sUpdateTimer->Cancel();
       sUpdateTimer = nsnull;
     }
   }
 }
 

--- a/image/decoders/icon/win/nsIconChannel.cpp
+++ b/image/decoders/icon/win/nsIconChannel.cpp
@@ -55,22 +55,20 @@
 #include "nsIURL.h"
 #include "nsNetUtil.h"
 #include "nsIFile.h"
 #include "nsIFileURL.h"
 #include "nsIMIMEService.h"
 #include "nsCExternalHandlerService.h"
 #include "nsDirectoryServiceDefs.h"
 
-#if MOZ_WINSDK_TARGETVER >= MOZ_NTDDI_LONGHORN
 #ifdef _WIN32_WINNT
 #undef _WIN32_WINNT
 #endif
 #define _WIN32_WINNT 0x0600
-#endif
 
 // we need windows.h to read out registry information...
 #include <windows.h>
 #include <shellapi.h>
 #include <shlobj.h>
 #include <objbase.h>
 #include <wchar.h>
 
@@ -88,29 +86,27 @@ struct ICONENTRY {
   PRUint8 ieColors;
   PRUint8 ieReserved;
   PRUint16 iePlanes;
   PRUint16 ieBitCount;
   PRUint32 ieSizeImage;
   PRUint32 ieFileOffset;
 };
 
-#if MOZ_WINSDK_TARGETVER >= MOZ_NTDDI_LONGHORN
 typedef HRESULT (WINAPI*SHGetStockIconInfoPtr) (SHSTOCKICONID siid, UINT uFlags, SHSTOCKICONINFO *psii);
 
 // Match stock icons with names
 static SHSTOCKICONID GetStockIconIDForName(const nsACString &aStockName)
 {
   // UAC shield icon
   if (aStockName == NS_LITERAL_CSTRING("uac-shield"))
     return SIID_SHIELD;
 
   return SIID_INVALID;
 }
-#endif
 
 // nsIconChannel methods
 nsIconChannel::nsIconChannel()
 {
 }
 
 nsIconChannel::~nsIconChannel() 
 {}
@@ -378,17 +374,16 @@ nsresult nsIconChannel::GetHIconFromFile
   if (shellResult && sfi.hIcon)
     *hIcon = sfi.hIcon;
   else
     rv = NS_ERROR_NOT_AVAILABLE;
 
   return rv;
 }
 
-#if MOZ_WINSDK_TARGETVER >= MOZ_NTDDI_LONGHORN
 nsresult nsIconChannel::GetStockHIcon(nsIMozIconURI *aIconURI, HICON *hIcon)
 {
   nsresult rv = NS_OK;
 
   // We can only do this on Vista or above
   HMODULE hShellDLL = ::LoadLibraryW(L"shell32.dll");
   SHGetStockIconInfoPtr pSHGetStockIconInfo =
     (SHGetStockIconInfoPtr) ::GetProcAddress(hShellDLL, "SHGetStockIconInfo");
@@ -421,17 +416,16 @@ nsresult nsIconChannel::GetStockHIcon(ns
     rv = NS_ERROR_NOT_AVAILABLE;
   }
 
   if (hShellDLL)
     ::FreeLibrary(hShellDLL);
 
   return rv;
 }
-#endif
 
 // Given a BITMAPINFOHEADER, returns the size of the color table.
 static int GetColorTableSize(BITMAPINFOHEADER* aHeader)
 {
   int colorTableSize = -1;
 
   // http://msdn.microsoft.com/en-us/library/dd183376%28v=VS.85%29.aspx
   switch (aHeader->biBitCount) {
@@ -495,26 +489,24 @@ static BITMAPINFO* CreateBitmapInfo(BITM
 nsresult nsIconChannel::MakeInputStream(nsIInputStream** _retval, bool nonBlocking)
 {
   // Check whether the icon requested's a file icon or a stock icon
   nsresult rv = NS_ERROR_NOT_AVAILABLE;
 
   // GetDIBits does not exist on windows mobile.
   HICON hIcon = NULL;
 
-#if MOZ_WINSDK_TARGETVER >= MOZ_NTDDI_LONGHORN
   nsCOMPtr<nsIMozIconURI> iconURI(do_QueryInterface(mUrl, &rv));
   NS_ENSURE_SUCCESS(rv, rv);
 
   nsCAutoString stockIcon;
   iconURI->GetStockIcon(stockIcon);
   if (!stockIcon.IsEmpty())
     rv = GetStockHIcon(iconURI, &hIcon);
   else
-#endif
     rv = GetHIconFromFile(&hIcon);
 
   NS_ENSURE_SUCCESS(rv, rv);
 
   if (hIcon)
   {
     // we got a handle to an icon. Now we want to get a bitmap for the icon using GetIconInfo....
     ICONINFO iconInfo;

--- a/image/decoders/icon/win/nsIconChannel.h
+++ b/image/decoders/icon/win/nsIconChannel.h
@@ -82,15 +82,13 @@ protected:
   nsCOMPtr<nsIInputStreamPump> mPump;
   nsCOMPtr<nsIStreamListener>  mListener;
 
   nsresult ExtractIconInfoFromUrl(nsIFile ** aLocalFile, PRUint32 * aDesiredImageSize, nsCString &aContentType, nsCString &aFileExtension);
   nsresult GetHIconFromFile(HICON *hIcon);
   nsresult MakeInputStream(nsIInputStream** _retval, bool nonBlocking);
 
   // Functions specific to Vista and above
-#if MOZ_WINSDK_TARGETVER >= MOZ_NTDDI_LONGHORN
 protected:
   nsresult GetStockHIcon(nsIMozIconURI *aIconURI, HICON *hIcon);
-#endif
 };
 
 #endif /* nsIconChannel_h___ */

--- a/js/src/configure.in
+++ b/js/src/configure.in
@@ -930,18 +930,16 @@ EOF
         AC_MSG_RESULT("yes")
     else
         AC_MSG_RESULT("no")
         AC_MSG_ERROR([You are targeting Windows version 0x$MOZ_WINSDK_TARGETVER, but your SDK only supports up to version $MOZ_WINSDK_MAXVER. Install and use an updated SDK, or target a lower version using --with-windows-version. Alternatively, try running the Windows SDK Configuration Tool and selecting a newer SDK. See https://developer.mozilla.org/En/Windows_SDK_versions for more details on fixing this.])
     fi
 
     AC_DEFINE_UNQUOTED(MOZ_WINSDK_TARGETVER,0x$MOZ_WINSDK_TARGETVER)
     # Definitions matching sdkddkver.h
-    AC_DEFINE_UNQUOTED(MOZ_NTDDI_WS03, 0x05020000)
-    AC_DEFINE_UNQUOTED(MOZ_NTDDI_LONGHORN, 0x06000000)
     AC_DEFINE_UNQUOTED(MOZ_NTDDI_WIN7, 0x06010000)
     ;;
 esac
 
 AC_PROG_CPP
 AC_PROG_CXXCPP
 
 if test -n "$_WIN32_MSVC"; then

--- a/toolkit/components/downloads/nsDownloadManager.h
+++ b/toolkit/components/downloads/nsDownloadManager.h
@@ -39,17 +39,17 @@
  * the provisions above, a recipient may use your version of this file under
  * the terms of any one of the MPL, the GPL or the LGPL.
  *
  * ***** END LICENSE BLOCK ***** */
 
 #ifndef downloadmanager___h___
 #define downloadmanager___h___
 
-#if defined(XP_WIN) && (MOZ_WINSDK_TARGETVER >= MOZ_NTDDI_LONGHORN)
+#if defined(XP_WIN)
 #define DOWNLOAD_SCANNER
 #endif
 
 #include "nsIDownload.h"
 #include "nsIDownloadManager.h"
 #include "nsIDownloadProgressListener.h"
 #include "nsILocalFile.h"
 #include "nsIMIMEInfo.h"

--- a/toolkit/components/downloads/nsDownloadScanner.cpp
+++ b/toolkit/components/downloads/nsDownloadScanner.cpp
@@ -32,18 +32,16 @@
  * use your version of this file under the terms of the MPL, indicate your
  * decision by deleting the provisions above and replace them with the notice
  * and other provisions required by the GPL or the LGPL. If you do not delete
  * the provisions above, a recipient may use your version of this file under
  * the terms of any one of the MPL, the GPL or the LGPL.
  *
  * ***** END LICENSE BLOCK ***** */
 
-#if MOZ_WINSDK_TARGETVER >= MOZ_NTDDI_LONGHORN
-
 #include "nsDownloadScanner.h"
 #include <comcat.h>
 #include <process.h>
 #include "nsDownloadManager.h"
 #include "nsIXULAppInfo.h"
 #include "nsXULAppAPI.h"
 #include "nsIPrefService.h"
 #include "nsNetUtil.h"
@@ -755,10 +753,8 @@ nsDownloadScannerWatchdog::WatchdogThrea
         // don't need to release the scan
         NS_RELEASE(releaser);
       }
     }
   }
   _endthreadex(0);
   return 0;
 }
-
-#endif // MOZ_WINSDK_TARGETVER >= MOZ_NTDDI_LONGHORN

--- a/toolkit/components/downloads/nsDownloadScanner.h
+++ b/toolkit/components/downloads/nsDownloadScanner.h
@@ -1,11 +1,10 @@
 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
 /* vim: se cin sw=2 ts=2 et : */
-#if MOZ_WINSDK_TARGETVER >= MOZ_NTDDI_LONGHORN
 
 #ifndef nsDownloadScanner_h_
 #define nsDownloadScanner_h_
 
 #ifdef WIN32_LEAN_AND_MEAN
 #undef WIN32_LEAN_AND_MEAN
 #endif
 #define INITGUID
@@ -116,9 +115,8 @@ private:
 
     friend unsigned int __stdcall nsDownloadScanner::ScannerThreadFunction(void *);
   };
   // Used to give access to Scan
   friend class nsDownloadScannerWatchdog;
 };
 #endif
 
-#endif // MOZ_WINSDK_TARGETVER >= MOZ_NTDDI_LONGHORN

--- a/toolkit/crashreporter/nsExceptionHandler.cpp
+++ b/toolkit/crashreporter/nsExceptionHandler.cpp
@@ -765,17 +765,16 @@ nsresult SetExceptionHandler(nsILocalFil
     posix_spawnattr_destroy(&spawnattr);
     return NS_ERROR_FAILURE;
   }
 #endif
 
 #ifdef XP_WIN32
   MINIDUMP_TYPE minidump_type = MiniDumpNormal;
 
-#if MOZ_WINSDK_TARGETVER >= MOZ_NTDDI_LONGHORN
   // Try to determine what version of dbghelp.dll we're using.
   // MinidumpWithFullMemoryInfo is only available in 6.1.x or newer.
 
   DWORD version_size = GetFileVersionInfoSizeW(L"dbghelp.dll", NULL);
   if (version_size > 0) {
     std::vector<BYTE> buffer(version_size);
     if (GetFileVersionInfoW(L"dbghelp.dll",
                             0,
@@ -788,17 +787,16 @@ nsresult SetExceptionHandler(nsILocalFil
            minor = LOWORD(file_info->dwFileVersionMS),
            revision = HIWORD(file_info->dwFileVersionLS);
       if (major > 6 || (major == 6 && minor > 1) ||
           (major == 6 && minor == 1 && revision >= 7600)) {
         minidump_type = MiniDumpWithFullMemoryInfo;
       }
     }
   }
-#endif // MOZ_WINSDK_TARGETVER >= MOZ_NTDDI_LONGHORN
 #endif // XP_WIN32
 
   // now set the exception handler
   gExceptionHandler = new google_breakpad::
     ExceptionHandler(tempPath.get(),
 #ifdef XP_WIN
                      FPEFilter,
 #else

--- a/uriloader/exthandler/win/nsOSHelperAppService.cpp
+++ b/uriloader/exthandler/win/nsOSHelperAppService.cpp
@@ -63,35 +63,29 @@
 // helper methods: forward declarations...
 static nsresult GetExtensionFrom4xRegistryInfo(const nsACString& aMimeType, 
                                                nsString& aFileExtension);
 static nsresult GetExtensionFromWindowsMimeDatabase(const nsACString& aMimeType,
                                                     nsString& aFileExtension);
 
 nsOSHelperAppService::nsOSHelperAppService() : 
   nsExternalHelperAppService()
-#if MOZ_WINSDK_TARGETVER >= MOZ_NTDDI_LONGHORN
   , mAppAssoc(nsnull)
-#endif
 {
-#if MOZ_WINSDK_TARGETVER >= MOZ_NTDDI_LONGHORN
   CoInitialize(NULL);
   CoCreateInstance(CLSID_ApplicationAssociationRegistration, NULL, CLSCTX_INPROC,
                    IID_IApplicationAssociationRegistration, (void**)&mAppAssoc);
-#endif
 }
 
 nsOSHelperAppService::~nsOSHelperAppService()
 {
-#if MOZ_WINSDK_TARGETVER >= MOZ_NTDDI_LONGHORN
   if (mAppAssoc)
     mAppAssoc->Release();
   mAppAssoc = nsnull;
   CoUninitialize();
-#endif
 }
 
 // The windows registry provides a mime database key which lists a set of mime types and corresponding "Extension" values. 
 // we can use this to look up our mime type to see if there is a preferred extension for the mime type.
 static nsresult GetExtensionFromWindowsMimeDatabase(const nsACString& aMimeType,
                                                     nsString& aFileExtension)
 {
   nsAutoString mimeDatabaseKey;
@@ -154,32 +148,30 @@ static nsresult GetExtensionFrom4xRegist
 }
 
 nsresult nsOSHelperAppService::OSProtocolHandlerExists(const char * aProtocolScheme, bool * aHandlerExists)
 {
   // look up the protocol scheme in the windows registry....if we find a match then we have a handler for it...
   *aHandlerExists = false;
   if (aProtocolScheme && *aProtocolScheme)
   {
-#if MOZ_WINSDK_TARGETVER >= MOZ_NTDDI_LONGHORN
     // Vista: use new application association interface
     if (mAppAssoc) {
       PRUnichar * pResult = nsnull;
       NS_ConvertASCIItoUTF16 scheme(aProtocolScheme);
       // We are responsible for freeing returned strings.
       HRESULT hr = mAppAssoc->QueryCurrentDefault(scheme.get(),
                                                   AT_URLPROTOCOL, AL_EFFECTIVE,
                                                   &pResult);
       if (SUCCEEDED(hr)) {
         CoTaskMemFree(pResult);
         *aHandlerExists = true;
       }
       return NS_OK;
     }
-#endif
 
     HKEY hKey;
     LONG err = ::RegOpenKeyExW(HKEY_CLASSES_ROOT,
                                NS_ConvertASCIItoUTF16(aProtocolScheme).get(),
                                0,
                                KEY_QUERY_VALUE,
                                &hKey);
     if (err == ERROR_SUCCESS)
@@ -198,34 +190,32 @@ NS_IMETHODIMP nsOSHelperAppService::GetA
 {
   nsCOMPtr<nsIWindowsRegKey> regKey = 
     do_CreateInstance("@mozilla.org/windows-registry-key;1");
   if (!regKey) 
     return NS_ERROR_NOT_AVAILABLE;
 
   NS_ConvertASCIItoUTF16 buf(aScheme);
 
-#if MOZ_WINSDK_TARGETVER >= MOZ_NTDDI_LONGHORN
   // Vista: use new application association interface
   if (mAppAssoc) {
     PRUnichar * pResult = nsnull;
     // We are responsible for freeing returned strings.
     HRESULT hr = mAppAssoc->QueryCurrentDefault(buf.get(),
                                                 AT_URLPROTOCOL, AL_EFFECTIVE,
                                                 &pResult);
     if (SUCCEEDED(hr)) {
       nsCOMPtr<nsIFile> app;
       nsAutoString appInfo(pResult);
       CoTaskMemFree(pResult);
       if (NS_SUCCEEDED(GetDefaultAppInfo(appInfo, _retval, getter_AddRefs(app))))
         return NS_OK;
     }
     return NS_ERROR_NOT_AVAILABLE;
   }
-#endif
 
   nsCOMPtr<nsIFile> app;
   GetDefaultAppInfo(buf, _retval, getter_AddRefs(app));
 
   if (!_retval.Equals(buf))
     return NS_OK;
 
   // Fall back to full path
@@ -550,17 +540,16 @@ already_AddRefed<nsMIMEInfoWin> nsOSHelp
 
   // don't append the '.'
   mimeInfo->AppendExtension(NS_ConvertUTF16toUTF8(Substring(fileExtToUse, 1)));
   mimeInfo->SetPreferredAction(nsIMIMEInfo::useSystemDefault);
 
   nsAutoString appInfo;
   bool found;
 
-#if MOZ_WINSDK_TARGETVER >= MOZ_NTDDI_LONGHORN
   // Retrieve the default application for this extension
   if (mAppAssoc) {
     // Vista: use the new application association COM interfaces
     // for resolving helpers.
     nsString assocType(fileExtToUse);
     PRUnichar * pResult = nsnull;
     HRESULT hr = mAppAssoc->QueryCurrentDefault(assocType.get(),
                                                 AT_FILEEXTENSION, AL_EFFECTIVE,
@@ -570,17 +559,16 @@ already_AddRefed<nsMIMEInfoWin> nsOSHelp
       appInfo.Assign(pResult);
       CoTaskMemFree(pResult);
     } 
     else {
       found = false;
     }
   } 
   else
-#endif
   {
     found = NS_SUCCEEDED(regKey->ReadStringValue(EmptyString(), 
                                                  appInfo));
   }
 
   // Bug 358297 - ignore the default handler, force the user to choose app
   if (appInfo.EqualsLiteral("XPSViewer.Document"))
     found = false;

--- a/uriloader/exthandler/win/nsOSHelperAppService.h
+++ b/uriloader/exthandler/win/nsOSHelperAppService.h
@@ -89,14 +89,12 @@ protected:
   already_AddRefed<nsMIMEInfoWin> GetByExtension(const nsAFlatString& aFileExt, const char *aTypeHint = nsnull);
   nsresult FindOSMimeInfoForType(const char * aMimeContentType, nsIURI * aURI, char ** aFileExtension, nsIMIMEInfo ** aMIMEInfo);
 
   static nsresult GetMIMEInfoFromRegistry(const nsAFlatString& fileType, nsIMIMEInfo *pInfo);
   /// Looks up the type for the extension aExt and compares it to aType
   static bool typeFromExtEquals(const PRUnichar* aExt, const char *aType);
 
 private:
-#if MOZ_WINSDK_TARGETVER >= MOZ_NTDDI_LONGHORN
   IApplicationAssociationRegistration* mAppAssoc;
-#endif
 };
 
 #endif // nsOSHelperAppService_h__

--- a/widget/windows/AudioSession.cpp
+++ b/widget/windows/AudioSession.cpp
@@ -31,18 +31,16 @@
  * use your version of this file under the terms of the MPL, indicate your
  * decision by deleting the provisions above and replace them with the notice
  * and other provisions required by the GPL or the LGPL. If you do not delete
  * the provisions above, a recipient may use your version of this file under
  * the terms of any one of the MPL, the GPL or the LGPL.
  *
  * ***** END LICENSE BLOCK ***** */
 
-#if MOZ_WINSDK_TARGETVER >= MOZ_NTDDI_LONGHORN
-
 #include <windows.h>
 #include <audiopolicy.h>
 #include <mmdeviceapi.h>
 
 #include "nsIStringBundle.h"
 #include "nsIUUIDGenerator.h"
 #include "nsIXULAppInfo.h"
 
@@ -473,10 +471,8 @@ AudioSession::OnSimpleVolumeChanged(floa
 STDMETHODIMP
 AudioSession::OnStateChanged(AudioSessionState aState)
 {
   return S_OK; // NOOP
 }
 
 } // namespace widget
 } // namespace mozilla
-
-#endif // MOZ_NTDDI_LONGHORN

--- a/widget/windows/AudioSession.h
+++ b/widget/windows/AudioSession.h
@@ -31,18 +31,16 @@
  * use your version of this file under the terms of the MPL, indicate your
  * decision by deleting the provisions above and replace them with the notice
  * and other provisions required by the GPL or the LGPL. If you do not delete
  * the provisions above, a recipient may use your version of this file under
  * the terms of any one of the MPL, the GPL or the LGPL.
  *
  * ***** END LICENSE BLOCK ***** */
 
-#if MOZ_WINSDK_TARGETVER >= MOZ_NTDDI_LONGHORN
-
 namespace mozilla {
 namespace widget {
 
 // Start the audio session in the current process
 nsresult StartAudioSession();
 
 // Pass the information necessary to start an audio session in another process
 nsresult GetAudioSessionData(nsID& aID,
@@ -55,10 +53,8 @@ nsresult RecvAudioSessionData(const nsID
                               const nsString& aSessionName,
                               const nsString& aIconPath);
 
 // Stop the audio session in the current process
 nsresult StopAudioSession();
 
 } // namespace widget
 } // namespace mozilla
-
-#endif // MOZ_WINSK_TARGETVER >= MOZ_NTDDI_LONGHORN

--- a/widget/windows/nsAppShell.cpp
+++ b/widget/windows/nsAppShell.cpp
@@ -244,27 +244,23 @@ CollectNewLoadedModules()
 
 NS_IMETHODIMP
 nsAppShell::Run(void)
 {
   LoadedModuleInfo modules[NUM_LOADEDMODULEINFO];
   memset(modules, 0, sizeof(modules));
   sLoadedModules = modules;	
 
-#if MOZ_WINSDK_TARGETVER >= MOZ_NTDDI_LONGHORN
   // Ignore failure; failing to start the application is not exactly an
   // appropriate response to failing to start an audio session.
   mozilla::widget::StartAudioSession();
-#endif
 
   nsresult rv = nsBaseAppShell::Run();
 
-#if MOZ_WINSDK_TARGETVER >= MOZ_NTDDI_LONGHORN
   mozilla::widget::StopAudioSession();
-#endif
 
   // Don't forget to null this out!
   sLoadedModules = nsnull;
 
   return rv;
 }
 
 #endif

--- a/widget/windows/nsFilePicker.cpp
+++ b/widget/windows/nsFilePicker.cpp
@@ -1238,25 +1238,21 @@ nsFilePicker::AppendXPFilter(const nsASt
   }
 
   mFilterList.Append(PRUnichar('\0'));
 }
 
 NS_IMETHODIMP
 nsFilePicker::AppendFilter(const nsAString& aTitle, const nsAString& aFilter)
 {
-#if MOZ_WINSDK_TARGETVER >= MOZ_NTDDI_LONGHORN
   if (WinUtils::GetWindowsVersion() >= WinUtils::VISTA_VERSION) {
     mComFilterList.Append(aTitle, aFilter);
   } else {
     AppendXPFilter(aTitle, aFilter);
   }
-#else
-  AppendXPFilter(aTitle, aFilter);
-#endif
   return NS_OK;
 }
 
 void
 nsFilePicker::RememberLastUsedDirectory()
 {
   nsCOMPtr<nsILocalFile> file(do_CreateInstance("@mozilla.org/file/local;1"));
   if (!file || NS_FAILED(file->InitWithPath(mUnicodeFile))) {

--- a/widget/windows/nsNativeThemeWin.cpp
+++ b/widget/windows/nsNativeThemeWin.cpp
@@ -1215,17 +1215,16 @@ nsNativeThemeWin::DrawWidgetBackground(n
 {
   HANDLE theme = GetTheme(aWidgetType);
   if (!theme)
     return ClassicDrawWidgetBackground(aContext, aFrame, aWidgetType, aRect, aDirtyRect); 
 
   if (!nsUXThemeData::drawThemeBG)
     return NS_ERROR_FAILURE;    
 
-#if MOZ_WINSDK_TARGETVER >= MOZ_NTDDI_LONGHORN
   // ^^ without the right sdk, assume xp theming and fall through.
   if (nsUXThemeData::CheckForCompositor()) {
     switch (aWidgetType) {
       case NS_THEME_WINDOW_TITLEBAR:
       case NS_THEME_WINDOW_TITLEBAR_MAXIMIZED:
       case NS_THEME_WINDOW_FRAME_LEFT:
       case NS_THEME_WINDOW_FRAME_RIGHT:
       case NS_THEME_WINDOW_FRAME_BOTTOM:
@@ -1244,17 +1243,16 @@ nsNativeThemeWin::DrawWidgetBackground(n
       break;
       case NS_THEME_WIN_GLASS:
       case NS_THEME_WIN_BORDERLESS_GLASS:
         // Nothing to draw, this is the glass background.
         return NS_OK;
       break;
     }
   }
-#endif // MOZ_WINSDK_TARGETVER >= MOZ_NTDDI_LONGHORN
 
   PRInt32 part, state;
   nsresult rv = GetThemePartAndState(aFrame, aWidgetType, part, state);
   if (NS_FAILED(rv))
     return rv;
 
   gfxFloat p2a = gfxFloat(aContext->AppUnitsPerDevPixel());
   RECT widgetRect;
@@ -1789,21 +1787,19 @@ nsNativeThemeWin::GetWidgetPadding(nsDev
   }
 
   HANDLE theme = GetTheme(aWidgetType);
 
   if (aWidgetType == NS_THEME_WINDOW_BUTTON_BOX ||
       aWidgetType == NS_THEME_WINDOW_BUTTON_BOX_MAXIMIZED) {
     aResult->SizeTo(0, 0, 0, 0);
 
-#if MOZ_WINSDK_TARGETVER >= MOZ_NTDDI_LONGHORN
     // aero glass doesn't display custom buttons
     if (nsUXThemeData::CheckForCompositor())
       return true;
-#endif
 
     // button padding for standard windows
     if (aWidgetType == NS_THEME_WINDOW_BUTTON_BOX) {
       aResult->top = GetSystemMetrics(SM_CXFRAME);
     }
     return true;
   }
 

--- a/widget/windows/nsUXThemeData.cpp
+++ b/widget/windows/nsUXThemeData.cpp
@@ -47,30 +47,26 @@
 #include "WinUtils.h"
 #include "nsUXThemeConstants.h"
 
 using namespace mozilla;
 using namespace mozilla::widget;
 
 const PRUnichar
 nsUXThemeData::kThemeLibraryName[] = L"uxtheme.dll";
-#if MOZ_WINSDK_TARGETVER >= MOZ_NTDDI_LONGHORN
 const PRUnichar
 nsUXThemeData::kDwmLibraryName[] = L"dwmapi.dll";
-#endif
 
 HANDLE
 nsUXThemeData::sThemes[eUXNumClasses];
 
 HMODULE
 nsUXThemeData::sThemeDLL = NULL;
-#if MOZ_WINSDK_TARGETVER >= MOZ_NTDDI_LONGHORN
 HMODULE
 nsUXThemeData::sDwmDLL = NULL;
-#endif
 
 BOOL
 nsUXThemeData::sFlatMenus = FALSE;
 
 bool nsUXThemeData::sTitlebarInfoPopulatedAero = false;
 bool nsUXThemeData::sTitlebarInfoPopulatedThemed = false;
 SIZE nsUXThemeData::sCommandButtons[4];
 
@@ -84,36 +80,32 @@ nsUXThemeData::GetThemePartSizePtr nsUXT
 nsUXThemeData::GetThemeSysFontPtr nsUXThemeData::getThemeSysFont = NULL;
 nsUXThemeData::GetThemeColorPtr nsUXThemeData::getThemeColor = NULL;
 nsUXThemeData::GetThemeMarginsPtr nsUXThemeData::getThemeMargins = NULL;
 nsUXThemeData::IsAppThemedPtr nsUXThemeData::isAppThemed = NULL;
 nsUXThemeData::GetCurrentThemeNamePtr nsUXThemeData::getCurrentThemeName = NULL;
 nsUXThemeData::GetThemeSysColorPtr nsUXThemeData::getThemeSysColor = NULL;
 nsUXThemeData::IsThemeBackgroundPartiallyTransparentPtr nsUXThemeData::isThemeBackgroundPartiallyTransparent = NULL;
 
-#if MOZ_WINSDK_TARGETVER >= MOZ_NTDDI_LONGHORN
 nsUXThemeData::DwmExtendFrameIntoClientAreaProc nsUXThemeData::dwmExtendFrameIntoClientAreaPtr = NULL;
 nsUXThemeData::DwmIsCompositionEnabledProc nsUXThemeData::dwmIsCompositionEnabledPtr = NULL;
 nsUXThemeData::DwmSetIconicThumbnailProc nsUXThemeData::dwmSetIconicThumbnailPtr = NULL;
 nsUXThemeData::DwmSetIconicLivePreviewBitmapProc nsUXThemeData::dwmSetIconicLivePreviewBitmapPtr = NULL;
 nsUXThemeData::DwmGetWindowAttributeProc nsUXThemeData::dwmGetWindowAttributePtr = NULL;
 nsUXThemeData::DwmSetWindowAttributeProc nsUXThemeData::dwmSetWindowAttributePtr = NULL;
 nsUXThemeData::DwmInvalidateIconicBitmapsProc nsUXThemeData::dwmInvalidateIconicBitmapsPtr = NULL;
 nsUXThemeData::DwmDefWindowProcProc nsUXThemeData::dwmDwmDefWindowProcPtr = NULL;
-#endif
 
 void
 nsUXThemeData::Teardown() {
   Invalidate();
   if(sThemeDLL)
     FreeLibrary(sThemeDLL);
-#if MOZ_WINSDK_TARGETVER >= MOZ_NTDDI_LONGHORN
   if(sDwmDLL)
     FreeLibrary(sDwmDLL);
-#endif
 }
 
 void
 nsUXThemeData::Initialize()
 {
   ::ZeroMemory(sThemes, sizeof(sThemes));
   NS_ASSERTION(!sThemeDLL, "nsUXThemeData being initialized twice!");
 
@@ -128,29 +120,27 @@ nsUXThemeData::Initialize()
     getThemeSysFont = (GetThemeSysFontPtr)GetProcAddress(sThemeDLL, "GetThemeSysFont");
     getThemeColor = (GetThemeColorPtr)GetProcAddress(sThemeDLL, "GetThemeColor");
     getThemeMargins = (GetThemeMarginsPtr)GetProcAddress(sThemeDLL, "GetThemeMargins");
     isAppThemed = (IsAppThemedPtr)GetProcAddress(sThemeDLL, "IsAppThemed");
     getCurrentThemeName = (GetCurrentThemeNamePtr)GetProcAddress(sThemeDLL, "GetCurrentThemeName");
     getThemeSysColor = (GetThemeSysColorPtr)GetProcAddress(sThemeDLL, "GetThemeSysColor");
     isThemeBackgroundPartiallyTransparent = (IsThemeBackgroundPartiallyTransparentPtr)GetProcAddress(sThemeDLL, "IsThemeBackgroundPartiallyTransparent");
   }
-#if MOZ_WINSDK_TARGETVER >= MOZ_NTDDI_LONGHORN
   if (GetDwmDLL()) {
     dwmExtendFrameIntoClientAreaPtr = (DwmExtendFrameIntoClientAreaProc)::GetProcAddress(sDwmDLL, "DwmExtendFrameIntoClientArea");
     dwmIsCompositionEnabledPtr = (DwmIsCompositionEnabledProc)::GetProcAddress(sDwmDLL, "DwmIsCompositionEnabled");
     dwmSetIconicThumbnailPtr = (DwmSetIconicThumbnailProc)::GetProcAddress(sDwmDLL, "DwmSetIconicThumbnail");
     dwmSetIconicLivePreviewBitmapPtr = (DwmSetIconicLivePreviewBitmapProc)::GetProcAddress(sDwmDLL, "DwmSetIconicLivePreviewBitmap");
     dwmGetWindowAttributePtr = (DwmGetWindowAttributeProc)::GetProcAddress(sDwmDLL, "DwmGetWindowAttribute");
     dwmSetWindowAttributePtr = (DwmSetWindowAttributeProc)::GetProcAddress(sDwmDLL, "DwmSetWindowAttribute");
     dwmInvalidateIconicBitmapsPtr = (DwmInvalidateIconicBitmapsProc)::GetProcAddress(sDwmDLL, "DwmInvalidateIconicBitmaps");
     dwmDwmDefWindowProcPtr = (DwmDefWindowProcProc)::GetProcAddress(sDwmDLL, "DwmDefWindowProc");
     CheckForCompositor(true);
   }
-#endif
 
   Invalidate();
 }
 
 void
 nsUXThemeData::Invalidate() {
   for(int i = 0; i < eUXNumClasses; i++) {
     if(sThemes[i]) {
@@ -177,24 +167,22 @@ nsUXThemeData::GetTheme(nsUXThemeClass c
 
 HMODULE
 nsUXThemeData::GetThemeDLL() {
   if (!sThemeDLL)
     sThemeDLL = ::LoadLibraryW(kThemeLibraryName);
   return sThemeDLL;
 }
 
-#if MOZ_WINSDK_TARGETVER >= MOZ_NTDDI_LONGHORN
 HMODULE
 nsUXThemeData::GetDwmDLL() {
   if (!sDwmDLL && WinUtils::GetWindowsVersion() >= WinUtils::VISTA_VERSION)
     sDwmDLL = ::LoadLibraryW(kDwmLibraryName);
   return sDwmDLL;
 }
-#endif
 
 const wchar_t *nsUXThemeData::GetClassName(nsUXThemeClass cls) {
   switch(cls) {
     case eUXButton:
       return L"Button";
     case eUXEdit:
       return L"Edit";
     case eUXTooltip:
@@ -262,29 +250,27 @@ nsUXThemeData::InitTitlebarInfo()
 
 // static
 void
 nsUXThemeData::UpdateTitlebarInfo(HWND aWnd)
 {
   if (!aWnd)
     return;
 
-#if MOZ_WINSDK_TARGETVER >= MOZ_NTDDI_LONGHORN
   if (!sTitlebarInfoPopulatedAero && nsUXThemeData::CheckForCompositor()) {
     RECT captionButtons;
     if (SUCCEEDED(nsUXThemeData::dwmGetWindowAttributePtr(aWnd,
                                                           DWMWA_CAPTION_BUTTON_BOUNDS,
                                                           &captionButtons,
                                                           sizeof(captionButtons)))) {
       sCommandButtons[CMDBUTTONIDX_BUTTONBOX].cx = captionButtons.right - captionButtons.left - 3;
       sCommandButtons[CMDBUTTONIDX_BUTTONBOX].cy = (captionButtons.bottom - captionButtons.top) - 1;
       sTitlebarInfoPopulatedAero = true;
     }
   }
-#endif
 
   if (sTitlebarInfoPopulatedThemed)
     return;
 
   // Query a temporary, visible window with command buttons to get
   // the right metrics. 
   nsAutoString className;
   className.AssignLiteral(kClassNameTemp);

--- a/widget/windows/nsUXThemeData.h
+++ b/widget/windows/nsUXThemeData.h
@@ -40,37 +40,33 @@
 #ifndef __UXThemeData_h__
 #define __UXThemeData_h__
 #include <windows.h>
 #include <uxtheme.h>
 
 #include "nscore.h"
 #include "mozilla/LookAndFeel.h"
 
-#if MOZ_WINSDK_TARGETVER >= MOZ_NTDDI_LONGHORN
 #include <dwmapi.h>
-#endif
 
 #include "nsWindowDefs.h"
 
 // These window messages are not defined in dwmapi.h
 #ifndef WM_DWMCOMPOSITIONCHANGED
 #define WM_DWMCOMPOSITIONCHANGED        0x031E
 #endif
 
 // Windows 7 additions
 #ifndef WM_DWMSENDICONICTHUMBNAIL
 #define WM_DWMSENDICONICTHUMBNAIL 0x0323
 #define WM_DWMSENDICONICLIVEPREVIEWBITMAP 0x0326
 #endif
 
-#if MOZ_WINSDK_TARGETVER >= MOZ_NTDDI_LONGHORN
 #define DWMWA_FORCE_ICONIC_REPRESENTATION 7
 #define DWMWA_HAS_ICONIC_BITMAP           10
-#endif
 
 enum nsUXThemeClass {
   eUXButton = 0,
   eUXEdit,
   eUXTooltip,
   eUXRebar,
   eUXMediaRebar,
   eUXCommunicationsRebar,
@@ -110,43 +106,37 @@ enum WindowsThemeColor {
 
 #define CMDBUTTONIDX_MINIMIZE    0
 #define CMDBUTTONIDX_RESTORE     1
 #define CMDBUTTONIDX_CLOSE       2
 #define CMDBUTTONIDX_BUTTONBOX   3
 
 class nsUXThemeData {
   static HMODULE sThemeDLL;
-#if MOZ_WINSDK_TARGETVER >= MOZ_NTDDI_LONGHORN
    static HMODULE sDwmDLL;
-#endif
   static HANDLE sThemes[eUXNumClasses];
   
   static const wchar_t *GetClassName(nsUXThemeClass);
 
 public:
   static const PRUnichar kThemeLibraryName[];
-#if MOZ_WINSDK_TARGETVER >= MOZ_NTDDI_LONGHORN
    static const PRUnichar kDwmLibraryName[];
-#endif
   static BOOL sFlatMenus;
   static bool sTitlebarInfoPopulatedAero;
   static bool sTitlebarInfoPopulatedThemed;
   static SIZE sCommandButtons[4];
   static mozilla::LookAndFeel::WindowsTheme sThemeId;
   static bool sIsDefaultWindowsTheme;
 
   static void Initialize();
   static void Teardown();
   static void Invalidate();
   static HANDLE GetTheme(nsUXThemeClass cls);
   static HMODULE GetThemeDLL();
-#if MOZ_WINSDK_TARGETVER >= MOZ_NTDDI_LONGHORN
   static HMODULE GetDwmDLL();
-#endif
 
   // nsWindow calls this to update desktop settings info
   static void InitTitlebarInfo();
   static void UpdateTitlebarInfo(HWND aWnd);
 
   static void UpdateNativeThemeInfo();
   static mozilla::LookAndFeel::WindowsTheme GetNativeThemeId();
   static bool IsDefaultWindowTheme();
@@ -204,17 +194,16 @@ public:
   static GetThemeSysFontPtr getThemeSysFont;
   static GetThemeColorPtr getThemeColor;
   static GetThemeMarginsPtr getThemeMargins;
   static IsAppThemedPtr isAppThemed;
   static GetCurrentThemeNamePtr getCurrentThemeName;
   static GetThemeSysColorPtr getThemeSysColor;
   static IsThemeBackgroundPartiallyTransparentPtr isThemeBackgroundPartiallyTransparent;
 
-#if MOZ_WINSDK_TARGETVER >= MOZ_NTDDI_LONGHORN
   // dwmapi.dll function typedefs and declarations
   typedef HRESULT (WINAPI*DwmExtendFrameIntoClientAreaProc)(HWND hWnd, const MARGINS *pMarInset);
   typedef HRESULT (WINAPI*DwmIsCompositionEnabledProc)(BOOL *pfEnabled);
   typedef HRESULT (WINAPI*DwmSetIconicThumbnailProc)(HWND hWnd, HBITMAP hBitmap, DWORD dwSITFlags);
   typedef HRESULT (WINAPI*DwmSetIconicLivePreviewBitmapProc)(HWND hWnd, HBITMAP hBitmap, POINT *pptClient, DWORD dwSITFlags);
   typedef HRESULT (WINAPI*DwmGetWindowAttributeProc)(HWND hWnd, DWORD dwAttribute, LPCVOID pvAttribute, DWORD cbAttribute);
   typedef HRESULT (WINAPI*DwmSetWindowAttributeProc)(HWND hWnd, DWORD dwAttribute, LPCVOID pvAttribute, DWORD cbAttribute);
   typedef HRESULT (WINAPI*DwmInvalidateIconicBitmapsProc)(HWND hWnd);
@@ -223,27 +212,24 @@ public:
   static DwmExtendFrameIntoClientAreaProc dwmExtendFrameIntoClientAreaPtr;
   static DwmIsCompositionEnabledProc dwmIsCompositionEnabledPtr;
   static DwmSetIconicThumbnailProc dwmSetIconicThumbnailPtr;
   static DwmSetIconicLivePreviewBitmapProc dwmSetIconicLivePreviewBitmapPtr;
   static DwmGetWindowAttributeProc dwmGetWindowAttributePtr;
   static DwmSetWindowAttributeProc dwmSetWindowAttributePtr;
   static DwmInvalidateIconicBitmapsProc dwmInvalidateIconicBitmapsPtr;
   static DwmDefWindowProcProc dwmDwmDefWindowProcPtr;
-#endif // MOZ_WINSDK_TARGETVER >= MOZ_NTDDI_LONGHORN
 
   // This method returns the cached compositor state. Most
   // callers should call without the argument. The cache
   // should be modified only when the application receives
   // WM_DWMCOMPOSITIONCHANGED. This rule prevents inconsistent
   // results for two or more calls which check the state during
   // composition transition.
   static bool CheckForCompositor(bool aUpdateCache = false) {
     static BOOL sCachedValue = FALSE;
-#if MOZ_WINSDK_TARGETVER >= MOZ_NTDDI_LONGHORN
     if(aUpdateCache && dwmIsCompositionEnabledPtr) {
       dwmIsCompositionEnabledPtr(&sCachedValue);
     }
-#endif // MOZ_WINSDK_TARGETVER >= MOZ_NTDDI_LONGHORN
     return (sCachedValue != FALSE);
   }
 };
 #endif // __UXThemeData_h__

--- a/widget/windows/nsWindow.cpp
+++ b/widget/windows/nsWindow.cpp
@@ -407,19 +407,17 @@ nsWindow::nsWindow() : nsBaseWidget()
   mLastKeyboardLayout   = 0;
   mAssumeWheelIsZoomUntil = 0;
   mBlurSuppressLevel    = 0;
   mLastPaintEndTime     = TimeStamp::Now();
 #ifdef MOZ_XUL
   mTransparentSurface   = nsnull;
   mMemoryDC             = nsnull;
   mTransparencyMode     = eTransparencyOpaque;
-#if MOZ_WINSDK_TARGETVER >= MOZ_NTDDI_LONGHORN
   memset(&mGlassMargins, 0, sizeof mGlassMargins);
-#endif // #if MOZ_WINSDK_TARGETVER >= MOZ_NTDDI_LONGHORN
 #endif
   mBackground           = ::GetSysColor(COLOR_BTNFACE);
   mBrush                = ::CreateSolidBrush(NSRGB_2_COLOREF(mBackground));
   mForeground           = ::GetSysColor(COLOR_WINDOWTEXT);
 
 #if MOZ_WINSDK_TARGETVER >= MOZ_NTDDI_WIN7
   mTaskbarPreview = nsnull;
   mHasTaskbarIconBeenCreated = false;
@@ -601,22 +599,20 @@ nsWindow::Create(nsIWidget *aParent,
                            nsToolkit::mDllInstance,
                            NULL);
 
   if (!mWnd) {
     NS_WARNING("nsWindow CreateWindowEx failed.");
     return NS_ERROR_FAILURE;
   }
 
-#if MOZ_WINSDK_TARGETVER >= MOZ_NTDDI_LONGHORN
   if (mIsRTL && nsUXThemeData::dwmSetWindowAttributePtr) {
     DWORD dwAttribute = TRUE;    
     nsUXThemeData::dwmSetWindowAttributePtr(mWnd, DWMWA_NONCLIENT_RTL_LAYOUT, &dwAttribute, sizeof dwAttribute);
   }
-#endif
 
   if (mWindowType != eWindowType_plugin &&
       mWindowType != eWindowType_invisible &&
       UseTrackPointHack()) {
     // Ugly Thinkpad Driver Hack (Bugs 507222 and 594977)
     //
     // We create two zero-sized windows as descendants of the top-level window,
     // like so:
@@ -2505,17 +2501,16 @@ RegionFromArray(const nsTArray<nsIntRect
   for (PRUint32 i = 0; i < aRects.Length(); ++i) {
     region.Or(region, aRects[i]);
   }
   return region;
 }
 
 void nsWindow::UpdateOpaqueRegion(const nsIntRegion &aOpaqueRegion)
 {
-#if MOZ_WINSDK_TARGETVER >= MOZ_NTDDI_LONGHORN
   if (!HasGlass() || GetParent())
     return;
 
   // If there is no opaque region or hidechrome=true, set margins
   // to support a full sheet of glass. Comments in MSDN indicate
   // all values must be set to -1 to get a full sheet of glass.
   MARGINS margins = { -1, -1, -1, -1 };
   if (!aOpaqueRegion.IsEmpty()) {
@@ -2549,22 +2544,20 @@ void nsWindow::UpdateOpaqueRegion(const 
     margins.cyTopHeight = largest.y;
   }
 
   // Only update glass area if there are changes
   if (memcmp(&mGlassMargins, &margins, sizeof mGlassMargins)) {
     mGlassMargins = margins;
     UpdateGlass();
   }
-#endif // #if MOZ_WINSDK_TARGETVER >= MOZ_NTDDI_LONGHORN
 }
 
 void nsWindow::UpdateGlass()
 {
-#if MOZ_WINSDK_TARGETVER >= MOZ_NTDDI_LONGHORN
   MARGINS margins = mGlassMargins;
 
   // DWMNCRP_USEWINDOWSTYLE - The non-client rendering area is
   //                          rendered based on the window style.
   // DWMNCRP_ENABLED        - The non-client area rendering is
   //                          enabled; the window style is ignored.
   DWMNCRENDERINGPOLICY policy = DWMNCRP_USEWINDOWSTYLE;
   switch (mTransparencyMode) {
@@ -2587,17 +2580,16 @@ void nsWindow::UpdateGlass()
           margins.cxLeftWidth, margins.cyTopHeight,
           margins.cxRightWidth, margins.cyBottomHeight));
 
   // Extends the window frame behind the client area
   if(nsUXThemeData::CheckForCompositor()) {
     nsUXThemeData::dwmExtendFrameIntoClientAreaPtr(mWnd, &margins);
     nsUXThemeData::dwmSetWindowAttributePtr(mWnd, DWMWA_NCRENDERING_POLICY, &policy, sizeof policy);
   }
-#endif // #if MOZ_WINSDK_TARGETVER >= MOZ_NTDDI_LONGHORN
 }
 #endif
 
 /**************************************************************
  *
  * SECTION: nsIWidget::HideWindowChrome
  *
  * Show or hide window chrome.
@@ -4545,26 +4537,24 @@ bool nsWindow::ProcessMessage(UINT msg, 
     if (ProcessMessageForPlugin(nativeMsg, aRetValue, callDefaultWndProc)) {
       return mWnd ? !callDefaultWndProc : true;
     }
   }
 
   bool result = false;    // call the default nsWindow proc
   *aRetValue = 0;
 
-#if MOZ_WINSDK_TARGETVER >= MOZ_NTDDI_LONGHORN
   // Glass hit testing w/custom transparent margins
   LRESULT dwmHitResult;
   if (mCustomNonClient &&
       nsUXThemeData::CheckForCompositor() &&
       nsUXThemeData::dwmDwmDefWindowProcPtr(mWnd, msg, wParam, lParam, &dwmHitResult)) {
     *aRetValue = dwmHitResult;
     return true;
   }
-#endif // MOZ_WINSDK_TARGETVER >= MOZ_NTDDI_LONGHORN
 
   switch (msg) {
     // WM_QUERYENDSESSION must be handled by all windows.
     // Otherwise Windows thinks the window can just be killed at will.
     case WM_QUERYENDSESSION:
       if (sCanQuit == TRI_UNKNOWN)
       {
         // Ask if it's ok to quit, and store the answer until we
@@ -4746,21 +4736,19 @@ bool nsWindow::ProcessMessage(UINT msg, 
       /*
        * WM_NCACTIVATE paints nc areas. Avoid this and re-route painting
        * through WM_NCPAINT via InvalidateNonClientRegion.
        */
 
       if (!mCustomNonClient)
         break;
 
-#if MOZ_WINSDK_TARGETVER >= MOZ_NTDDI_LONGHORN
       // let the dwm handle nc painting on glass
       if(nsUXThemeData::CheckForCompositor())
         break;
-#endif
 
       if (wParam == TRUE) {
         // going active
         *aRetValue = FALSE; // ignored
         result = true;
         UpdateGetWindowInfoCaptionStatus(true);
         // invalidate to trigger a paint
         InvalidateNonClientRegion();
@@ -4782,21 +4770,19 @@ bool nsWindow::ProcessMessage(UINT msg, 
        * Reset the non-client paint region so that it excludes the
        * non-client areas we paint manually. Then call defwndproc
        * to do the actual painting.
        */
 
       if (!mCustomNonClient)
         break;
 
-#if MOZ_WINSDK_TARGETVER >= MOZ_NTDDI_LONGHORN
       // let the dwm handle nc painting on glass
       if(nsUXThemeData::CheckForCompositor())
         break;
-#endif
 
       HRGN paintRgn = ExcludeNonClientFromPaintRegion((HRGN)wParam);
       LRESULT res = CallWindowProcW(GetPrevWindowProc(), mWnd,
                                     msg, (WPARAM)paintRgn, lParam);
       if (paintRgn != (HRGN)wParam)
         DeleteObject(paintRgn);
       *aRetValue = res;
       result = true;
@@ -5295,30 +5281,28 @@ bool nsWindow::ProcessMessage(UINT msg, 
       // If OnMouseWheel returns false, OnMouseWheel processed the event internally.
       // 'result' and 'aRetValue' will be set based on what we did with the event, so
       // we should fall through.
       OnMouseWheelInternal(nativeMessage, wParam, lParam, aRetValue);
       // Doesn't need to call next wndproc for internal message.
       return true;
     }
 
-#if MOZ_WINSDK_TARGETVER >= MOZ_NTDDI_LONGHORN
   case WM_DWMCOMPOSITIONCHANGED:
     // First, update the compositor state to latest one. All other methods
     // should use same state as here for consistency painting.
     nsUXThemeData::CheckForCompositor(true);
 
     UpdateNonClientMargins();
     RemovePropW(mWnd, kManageWindowInfoProperty);
     BroadcastMsg(mWnd, WM_DWMCOMPOSITIONCHANGED);
     DispatchStandardEvent(NS_THEMECHANGED);
     UpdateGlass();
     Invalidate(true, true, true);
     break;
-#endif
 
   case WM_UPDATEUISTATE:
   {
     // If the UI state has changed, fire an event so the UI updates the
     // keyboard cues based on the system setting and how the window was
     // opened. For example, a dialog opened via a keyboard press on a button
     // should enable cues, whereas the same dialog opened via a mouse click of
     // the button should not.
@@ -8140,20 +8124,18 @@ void nsWindow::SetWindowTranslucencyInne
      exStyle |= WS_EX_LAYERED;
    else
      exStyle &= ~WS_EX_LAYERED;
 
   VERIFY_WINDOW_STYLE(style);
   ::SetWindowLongPtrW(hWnd, GWL_STYLE, style);
   ::SetWindowLongPtrW(hWnd, GWL_EXSTYLE, exStyle);
 
-#if MOZ_WINSDK_TARGETVER >= MOZ_NTDDI_LONGHORN
   if (HasGlass())
     memset(&mGlassMargins, 0, sizeof mGlassMargins);
-#endif // #if MOZ_WINSDK_TARGETVER >= MOZ_NTDDI_LONGHORN
   mTransparencyMode = aMode;
 
   SetupTranslucentWindowMemoryBitmap(aMode);
   UpdateGlass();
 }
 
 void nsWindow::SetupTranslucentWindowMemoryBitmap(nsTransparencyMode aMode)
 {

--- a/widget/windows/nsWindow.h
+++ b/widget/windows/nsWindow.h
@@ -588,20 +588,18 @@ protected:
 #endif
 
   // Transparency
 #ifdef MOZ_XUL
   // Use layered windows to support full 256 level alpha translucency
   nsRefPtr<gfxASurface> mTransparentSurface;
   HDC                   mMemoryDC;
   nsTransparencyMode    mTransparencyMode;
-#if MOZ_WINSDK_TARGETVER >= MOZ_NTDDI_LONGHORN
   nsIntRegion           mPossiblyTransparentRegion;
   MARGINS               mGlassMargins;
-#endif // #if MOZ_WINSDK_TARGETVER >= MOZ_NTDDI_LONGHORN
 #endif // MOZ_XUL
 
   // Win7 Gesture processing and management
   nsWinGesture          mGesture;
 
 #if MOZ_WINSDK_TARGETVER >= MOZ_NTDDI_WIN7
   // Weak ref to the nsITaskbarWindowPreview associated with this window
   nsWeakPtr             mTaskbarPreview;

--- a/xpcom/base/nsMemoryReporterManager.cpp
+++ b/xpcom/base/nsMemoryReporterManager.cpp
@@ -252,17 +252,16 @@ static PRInt64 GetVsize()
 
   bool success = GlobalMemoryStatusEx(&s);
   if (!success)
     return -1;
 
   return s.ullTotalVirtual - s.ullAvailVirtual;
 }
 
-#if MOZ_WINSDK_TARGETVER >= MOZ_NTDDI_LONGHORN
 static PRInt64 GetPrivate()
 {
     PROCESS_MEMORY_COUNTERS_EX pmcex;
     pmcex.cb = sizeof(PROCESS_MEMORY_COUNTERS_EX);
 
     if (!GetProcessMemoryInfo(GetCurrentProcess(),
                               (PPROCESS_MEMORY_COUNTERS) &pmcex, sizeof(pmcex)))
     return (PRInt64) -1;
@@ -273,17 +272,16 @@ static PRInt64 GetPrivate()
 NS_MEMORY_REPORTER_IMPLEMENT(Private,
     "private",
     KIND_OTHER,
     UNITS_BYTES,
     GetPrivate,
     "Memory that cannot be shared with other processes, including memory that "
     "is committed and marked MEM_PRIVATE, data that is not mapped, and "
     "executable pages that have been written to.")
-#endif
 
 static PRInt64 GetResident()
 {
   PROCESS_MEMORY_COUNTERS pmc;
   pmc.cb = sizeof(PROCESS_MEMORY_COUNTERS);
 
   if (!GetProcessMemoryInfo(GetCurrentProcess(), &pmc, sizeof(pmc)))
       return (PRInt64) -1;
@@ -577,17 +575,17 @@ nsMemoryReporterManager::Init()
     REGISTER(Vsize);
 #endif
 
 #if defined(XP_LINUX) || defined(XP_MACOSX) || defined(SOLARIS)
     REGISTER(PageFaultsSoft);
     REGISTER(PageFaultsHard);
 #endif
 
-#if defined(XP_WIN) && MOZ_WINSDK_TARGETVER >= MOZ_NTDDI_LONGHORN
+#if defined(XP_WIN)
     REGISTER(Private);
 #endif
 
 #if defined(HAVE_JEMALLOC_STATS)
     REGISTER(HeapCommitted);
     REGISTER(HeapCommittedFragmentation);
     REGISTER(HeapDirty);
 #elif defined(XP_MACOSX) && !defined(MOZ_MEMORY)