--- a/caps/src/nsNullPrincipalURI.cpp
+++ b/caps/src/nsNullPrincipalURI.cpp
@@ -197,16 +197,30 @@ nsNullPrincipalURI::SetScheme(const nsAC
 
 NS_IMETHODIMP
 nsNullPrincipalURI::GetSpec(nsACString &_spec)
 {
   _spec = mScheme + NS_LITERAL_CSTRING(":") + mPath;
   return NS_OK;
 }
 
+// result may contain unescaped UTF-8 characters
+NS_IMETHODIMP
+nsNullPrincipalURI::GetSpecIgnoringRef(nsACString &result)
+{
+  return GetSpec(result);
+}
+
+NS_IMETHODIMP
+nsNullPrincipalURI::GetHasRef(PRBool *result)
+{
+  *result = PR_FALSE;
+  return NS_OK;
+}
+
 NS_IMETHODIMP
 nsNullPrincipalURI::SetSpec(const nsACString &aSpec)
 {
   return NS_ERROR_NOT_IMPLEMENTED;
 }
 
 NS_IMETHODIMP
 nsNullPrincipalURI::GetUsername(nsACString &_username)

--- a/modules/libjar/nsIJARURI.idl
+++ b/modules/libjar/nsIJARURI.idl
@@ -42,17 +42,17 @@
  * JAR URLs have the following syntax
  *
  * jar:<jar-file-uri>!/<jar-entry>
  *
  * EXAMPLE: jar:http://www.big.com/blue.jar!/ocean.html
  *
  * The nsIURL methods operate on the <jar-entry> part of the spec.
  */
-[scriptable, uuid(c95d481a-c0ec-43cc-8320-43842b1df597)]
+[scriptable, uuid(0d31634e-2fc9-4597-9d53-11fb3f05516a)]
 interface nsIJARURI : nsIURL {
 
     /**
      * Returns the root URI (the one for the actual JAR file) for this JAR
      * (e.g., http://www.big.com/blue.jar).
      */
     readonly attribute nsIURI JARFile;
 

--- a/modules/libjar/nsJARURI.cpp
+++ b/modules/libjar/nsJARURI.cpp
@@ -243,16 +243,30 @@ NS_IMETHODIMP
 nsJARURI::GetSpec(nsACString &aSpec)
 {
     nsCAutoString entrySpec;
     mJAREntry->GetSpec(entrySpec);
     return FormatSpec(entrySpec, aSpec);
 }
 
 NS_IMETHODIMP
+nsJARURI::GetSpecIgnoringRef(nsACString &aSpec)
+{
+    nsCAutoString entrySpec;
+    mJAREntry->GetSpecIgnoringRef(entrySpec);
+    return FormatSpec(entrySpec, aSpec);
+}
+
+NS_IMETHODIMP
+nsJARURI::GetHasRef(PRBool *result)
+{
+    return mJAREntry->GetHasRef(result);
+}
+
+NS_IMETHODIMP
 nsJARURI::SetSpec(const nsACString& aSpec)
 {
     return SetSpecWithBase(aSpec, nsnull);
 }
 
 nsresult
 nsJARURI::SetSpecWithBase(const nsACString &aSpec, nsIURI* aBaseURL)
 {

--- a/modules/libpr0n/decoders/icon/nsIIconURI.idl
+++ b/modules/libpr0n/decoders/icon/nsIIconURI.idl
@@ -68,17 +68,17 @@
    *   Values:      [normal | disabled]
    *   Description: The state of the icon.
    *
    *   Parameter:   contentType
    *   Values:      <mime-type>
    *   Description: The mime type we want an icon for. This is ignored by stock images.
    */
 
-[scriptable, uuid(b6a47fa0-2f1e-4084-ae5f-bdebab4d1cc3)]
+[scriptable, uuid(da53adda-cbe3-41bc-a57d-fdd7a0ff448b)]
 interface nsIMozIconURI : nsIURI 
 {
   /**
    * iconFile
    *
    * the file URL contained within this moz-icon url, or null.
    */
   attribute nsIURL iconURL;

--- a/modules/libpr0n/decoders/icon/nsIconURI.cpp
+++ b/modules/libpr0n/decoders/icon/nsIconURI.cpp
@@ -140,16 +140,29 @@ nsMozIconURI::GetSpec(nsACString &aSpec)
   {
     aSpec += "&contentType=";
     aSpec += mContentType.get();
   }
   
   return NS_OK;
 }
 
+NS_IMETHODIMP
+nsMozIconURI::GetSpecIgnoringRef(nsACString &result)
+{
+  return GetSpec(result);
+}
+
+NS_IMETHODIMP
+nsMozIconURI::GetHasRef(PRBool *result)
+{
+  *result = PR_FALSE;
+  return NS_OK;
+}
+
 // takes a string like ?size=32&contentType=text/html and returns a new string 
 // containing just the attribute value. i.e you could pass in this string with
 // an attribute name of 'size=', this will return 32
 // Assumption: attribute pairs in the string are separated by '&'.
 void extractAttributeValue(const char * searchString, const char * attributeName, nsCString& result)
 {
   //NS_ENSURE_ARG_POINTER(extractAttributeValue);
 

--- a/netwerk/base/public/nsIFileURL.idl
+++ b/netwerk/base/public/nsIFileURL.idl
@@ -40,17 +40,17 @@
 
 interface nsIFile;
 
 /**
  * nsIFileURL provides access to the underlying nsIFile object corresponding to
  * an URL.  The URL scheme need not be file:, since other local protocols may
  * map URLs to files (e.g., resource:).
  */
-[scriptable, uuid(44c14c16-07b4-48fb-b44b-0c8986697a17)]
+[scriptable, uuid(93a4f94e-1dae-4056-ac4e-08e13691ee8e)]
 interface nsIFileURL : nsIURL
 {
     /**
      * Get/Set nsIFile corresponding to this URL.
      *
      *  - Getter returns a reference to an immutable object.  Callers must clone
      *    before attempting to modify the returned nsIFile object.  NOTE: this
      *    constraint might not be enforced at runtime, so beware!!

--- a/netwerk/base/public/nsIURI.idl
+++ b/netwerk/base/public/nsIURI.idl
@@ -96,17 +96,17 @@
  * nsIIOService.newURI.
  *
  * NOTE: nsBinaryInputStream::ReadObject contains a hackaround to intercept the
  * old (pre-gecko6) nsIURI IID and swap in the current IID instead, in order
  * for sessionstore to work after an upgrade.  If this IID is revved further,
  * we will need to add additional checks there for all intermediate IIDs, until
  * nsPrincipal is fixed to serialize its URIs as nsISupports (bug 662693).
  */
-[scriptable, uuid(12120b20-0929-40e9-88cf-6e08766e8b23)]
+[scriptable, uuid(395fe045-7d18-4adb-a3fd-af98c8a1af11)]
 interface nsIURI : nsISupports
 {
     /************************************************************************
      * The URI is broken down into the following principal components:
      */
 
     /**
      * Returns a string representation of the URI. Setting the spec causes
@@ -267,9 +267,18 @@ interface nsIURI : nsISupports
      */
     boolean equalsExceptRef(in nsIURI other);
 
     /**
      * Clones the current URI, clearing the 'ref' attribute in the clone.
      */
     nsIURI cloneIgnoringRef();
 
+    /**
+     * returns a string for the current URI with the ref element cleared.
+     */
+   readonly attribute AUTF8String specIgnoringRef;
+
+    /**
+     * Returns if there is a reference portion (the part after the "#") of the URI.
+     */
+   readonly attribute boolean hasRef;
 };

--- a/netwerk/base/public/nsIURL.idl
+++ b/netwerk/base/public/nsIURL.idl
@@ -49,17 +49,17 @@
  *            \          \                       /
  *             \          -----------------------
  *              \                   |          /
  *               \               fileName     /
  *                ----------------------------
  *                            |
  *                        filePath
  */
-[scriptable, uuid(eab18ad5-e3be-4eb3-9c78-7d4e750200d6)]
+[scriptable, uuid(067d697a-c725-4293-9656-e658a75e6bcf)]
 interface nsIURL : nsIURI
 {
     /*************************************************************************
      * The URL path is broken down into the following principal components:
      */
 
     /**
      * Returns a path including the directory and file portions of a

--- a/netwerk/base/src/nsSimpleURI.cpp
+++ b/netwerk/base/src/nsSimpleURI.cpp
@@ -196,16 +196,31 @@ nsSimpleURI::GetSpec(nsACString &result)
     if (mIsRefValid) {
         result += NS_LITERAL_CSTRING("#") + mRef;
     } else {
         NS_ABORT_IF_FALSE(mRef.IsEmpty(), "mIsRefValid/mRef invariant broken");
     }
     return NS_OK;
 }
 
+// result may contain unescaped UTF-8 characters
+NS_IMETHODIMP
+nsSimpleURI::GetSpecIgnoringRef(nsACString &result)
+{
+    result = mScheme + NS_LITERAL_CSTRING(":") + mPath;
+    return NS_OK;
+}
+
+NS_IMETHODIMP
+nsSimpleURI::GetHasRef(PRBool *result)
+{
+    *result = mIsRefValid;
+    return NS_OK;
+}
+
 NS_IMETHODIMP
 nsSimpleURI::SetSpec(const nsACString &aSpec)
 {
     NS_ENSURE_STATE(mMutable);
     
     const nsAFlatCString& flat = PromiseFlatCString(aSpec);
     const char* specPtr = flat.get();
 

--- a/netwerk/base/src/nsStandardURL.cpp
+++ b/netwerk/base/src/nsStandardURL.cpp
@@ -996,16 +996,31 @@ NS_IMETHODIMP
 nsStandardURL::GetSpec(nsACString &result)
 {
     result = mSpec;
     return NS_OK;
 }
 
 // result may contain unescaped UTF-8 characters
 NS_IMETHODIMP
+nsStandardURL::GetSpecIgnoringRef(nsACString &result)
+{
+    // URI without ref is 0 to one char before ref
+    if (mRef.mLen >= 0) {
+        URLSegment noRef(0, mRef.mPos - 1);
+
+        result = Segment(noRef);
+    } else {
+        result = mSpec;
+    }
+    return NS_OK;
+}
+
+// result may contain unescaped UTF-8 characters
+NS_IMETHODIMP
 nsStandardURL::GetPrePath(nsACString &result)
 {
     result = Prepath();
     return NS_OK;
 }
 
 // result is strictly US-ASCII
 NS_IMETHODIMP
@@ -2139,16 +2154,23 @@ nsStandardURL::GetQuery(nsACString &resu
 // result may contain unescaped UTF-8 characters
 NS_IMETHODIMP
 nsStandardURL::GetRef(nsACString &result)
 {
     result = Ref();
     return NS_OK;
 }
 
+NS_IMETHODIMP
+nsStandardURL::GetHasRef(PRBool *result)
+{
+    *result = (mRef.mLen >= 0);
+    return NS_OK;
+}
+
 // result may contain unescaped UTF-8 characters
 NS_IMETHODIMP
 nsStandardURL::GetDirectory(nsACString &result)
 {
     result = Directory();
     return NS_OK;
 }
 

--- a/netwerk/test/unit/test_URIs.js
+++ b/netwerk/test/unit/test_URIs.js
@@ -301,23 +301,27 @@ var gTests = [
     ref:     "",// fix
     nsIURL:  true, nsINestedURI: false },
   { spec:    "http://a/b/c/d;p?q",
     relativeURI: "g?y",
     scheme:  "http",
     prePath: "http://a",
     path:    "/b/c/g?y",
     ref:     "",// fix
+    specIgnoringRef: "http://a/b/c/g?y",
+    hasRef:  false,
     nsIURL:  true, nsINestedURI: false },
   { spec:    "http://a/b/c/d;p?q",
     relativeURI: "#s",
     scheme:  "http",
     prePath: "http://a",
     path:    "/b/c/d;p?q#s",
     ref:     "s",// fix
+    specIgnoringRef: "http://a/b/c/d;p?q",
+    hasRef:  true,
     nsIURL:  true, nsINestedURI: false },
   { spec:    "http://a/b/c/d;p?q",
     relativeURI: "g#s",
     scheme:  "http",
     prePath: "http://a",
     path:    "/b/c/g#s",
     ref:     "s",
     nsIURL:  true, nsINestedURI: false },
@@ -683,16 +687,21 @@ function do_test_uri_basic(aTest) {
   do_check_property(aTest, URI, "scheme");
   do_check_property(aTest, URI, "prePath");
   do_check_property(aTest, URI, "path");
   do_check_property(aTest, URI, "ref");
   do_check_property(aTest, URI, "port");
   do_check_property(aTest, URI, "username");
   do_check_property(aTest, URI, "password");
   do_check_property(aTest, URI, "host");
+  do_check_property(aTest, URI, "specIgnoringRef");
+  if ("hasRef" in aTest) {
+    do_info("testing hasref: " + aTest.hasRef + " vs " + URI.hasRef);
+    do_check_eq(aTest.hasRef, URI.hasRef);
+  }
 }
 
 // Test that a given URI parses correctly when we add a given ref to the end
 function do_test_uri_with_hash_suffix(aTest, aSuffix) {
   do_info("making sure caller is using suffix that starts with '#'");
   do_check_eq(aSuffix[0], "#");
 
   var origURI = NetUtil.newURI(aTest.spec);
@@ -723,16 +732,18 @@ function do_test_uri_with_hash_suffix(aT
           " doesn't equal self with '" + aSuffix + "' appended");
 
   do_check_false(origURI.equals(testURI));
 
   do_info("testing " + aTest.spec +
           " is equalExceptRef to self with '" + aSuffix + "' appended");
   do_check_uri_eqExceptRef(origURI, testURI);
 
+  do_check_eq(testURI.hasRef, true);
+
   if (!origURI.ref) {
     // These tests fail if origURI has a ref
     do_info("testing cloneIgnoringRef on " + testURI.spec +
             " is equal to no-ref version but not equal to ref version");
     var cloneNoRef = testURI.cloneIgnoringRef();
     do_check_uri_eq(cloneNoRef, origURI);
     do_check_false(cloneNoRef.equals(testURI));
   }