--- a/content/media/gmp/GMPService.cpp
+++ b/content/media/gmp/GMPService.cpp
@@ -172,32 +172,36 @@ GeckoMediaPluginService::Init()
   MOZ_ALWAYS_TRUE(NS_SUCCEEDED(obsService->AddObserver(this, NS_XPCOM_SHUTDOWN_THREADS_OBSERVER_ID, false)));
   MOZ_ALWAYS_TRUE(NS_SUCCEEDED(obsService->AddObserver(this, "last-pb-context-exited", false)));
 
   nsCOMPtr<nsIPrefBranch> prefs = do_GetService(NS_PREFSERVICE_CONTRACTID);
   if (prefs) {
     prefs->AddObserver("media.gmp.plugin.crash", this, false);
   }
 
+#ifndef MOZ_WIDGET_GONK
   // Directory service is main thread only, so cache the profile dir here
   // so that we can use it off main thread.
+  // We only do this on non-B2G, as this fails in multi-process Gecko.
+  // TODO: Make this work in multi-process Gecko.
   nsresult rv = NS_GetSpecialDirectory(NS_APP_USER_PROFILE_50_DIR, getter_AddRefs(mStorageBaseDir));
   if (NS_WARN_IF(NS_FAILED(rv))) {
     return rv;
   }
 
   rv = mStorageBaseDir->AppendNative(NS_LITERAL_CSTRING("gmp"));
   if (NS_WARN_IF(NS_FAILED(rv))) {
     return rv;
   }
 
   rv = mStorageBaseDir->Create(nsIFile::DIRECTORY_TYPE, 0700);
   if (NS_WARN_IF(NS_FAILED(rv) && rv != NS_ERROR_FILE_ALREADY_EXISTS)) {
     return rv;
   }
+#endif
 
   // Kick off scanning for plugins
   nsCOMPtr<nsIThread> thread;
   return GetThread(getter_AddRefs(thread));
 }
 
 void
 AbortWaitingForGMPAsyncShutdown(nsITimer* aTimer, void* aClosure)
@@ -884,20 +888,24 @@ GeckoMediaPluginService::ReAddOnGMPThrea
   // Schedule aOld to be destroyed.  We can't destroy it from here since we
   // may be inside ActorDestroyed() for it.
   NS_DispatchToCurrentThread(WrapRunnableNM(&Dummy, aOld));
 }
 
 NS_IMETHODIMP
 GeckoMediaPluginService::GetStorageDir(nsIFile** aOutFile)
 {
+#ifndef MOZ_WIDGET_GONK
   if (NS_WARN_IF(!mStorageBaseDir)) {
     return NS_ERROR_FAILURE;
   }
   return mStorageBaseDir->Clone(aOutFile);
+#else
+  return NS_ERROR_NOT_IMPLEMENTED;
+#endif
 }
 
 static nsresult
 WriteToFile(nsIFile* aPath,
             const nsCString& aFileName,
             const nsCString& aData)
 {
   nsCOMPtr<nsIFile> path;
@@ -983,16 +991,21 @@ GeckoMediaPluginService::GetNodeId(const
                                    nsACString& aOutId)
 {
   MOZ_ASSERT(NS_GetCurrentThread() == mGMPThread);
   LOGD(("%s::%s: (%s, %s), %s", __CLASS__, __FUNCTION__,
        NS_ConvertUTF16toUTF8(aOrigin).get(),
        NS_ConvertUTF16toUTF8(aTopLevelOrigin).get(),
        (aInPrivateBrowsing ? "PrivateBrowsing" : "NonPrivateBrowsing")));
 
+#ifdef MOZ_WIDGET_GONK
+  NS_WARNING("GeckoMediaPluginService::GetNodeId Not implemented on B2G");
+  return NS_ERROR_NOT_IMPLEMENTED;
+#endif
+
   nsresult rv;
   const uint32_t NodeIdSaltLength = 32;
 
   if (aOrigin.EqualsLiteral("null") ||
       aOrigin.IsEmpty() ||
       aTopLevelOrigin.EqualsLiteral("null") ||
       aTopLevelOrigin.IsEmpty()) {
     // At least one of the (origin, topLevelOrigin) is null or empty;

--- a/content/media/gmp/GMPService.h
+++ b/content/media/gmp/GMPService.h
@@ -109,17 +109,19 @@ private:
     T mValue;
   };
 
   MainThreadOnly<bool> mWaitingForPluginsAsyncShutdown;
 
   nsTArray<nsRefPtr<GMPParent>> mAsyncShutdownPlugins; // GMP Thread only.
   nsCOMPtr<nsITimer> mAsyncShutdownTimeout; // GMP Thread only.
 
+#ifndef MOZ_WIDGET_GONK
   nsCOMPtr<nsIFile> mStorageBaseDir;
+#endif
 
   // Hashes of (origin,topLevelOrigin) to the node id for
   // non-persistent sessions.
   nsClassHashtable<nsUint32HashKey, nsCString> mTempNodeIds;
 
   // Hashes node id to whether that node id is allowed to store data
   // persistently on disk.
   nsDataHashtable<nsCStringHashKey, bool> mPersistentStorageAllowed;