Bug 462892 - Add a mIsSynthetic member to nsIDocument r=roc

content/base/public/nsIDocument.h

@@ -1692,6 +1692,10 @@ protected:
   // True if we're an SVG document being used as an image.
   PRPackedBool mIsBeingUsedAsImage;
 
+  // True is this document is synthetic : stand alone image, video, audio
+  // file, etc.
+  PRPackedBool mIsSyntheticDocument;
+
   // The document's script global object, the object from which the
   // document can get its script context and scope. This is the
   // *inner* window object.

content/base/src/nsDocument.cpp

@@ -5919,6 +5919,13 @@ nsDocument::SetXmlStandalone(PRBool aXmlStandalone)
   return IsHTML() ? NS_ERROR_DOM_NOT_SUPPORTED_ERR : NS_ERROR_NOT_IMPLEMENTED;
 }
 
+NS_IMETHODIMP
+nsDocument::GetMozSyntheticDocument(PRBool *aSyntheticDocument)
+{
+  *aSyntheticDocument = mIsSyntheticDocument;
+  return NS_OK;
+}
+
 NS_IMETHODIMP
 nsDocument::GetXmlVersion(nsAString& aXmlVersion)
 {

content/base/src/nsDocument.h

@@ -523,7 +523,7 @@ public:
   virtual void NotifyPossibleTitleChange(PRBool aBoundTitleElement);
 
   virtual void SetDocumentURI(nsIURI* aURI);
-  
+
   /**
    * Set the principal responsible for this document.
    */

content/html/document/src/MediaDocument.cpp

@@ -150,6 +150,8 @@ MediaDocument::Init()
                                 getter_AddRefs(mStringBundle));
   }
 
+  mIsSyntheticDocument = PR_TRUE;
+
   return NS_OK;
 }
 

dom/interfaces/core/nsIDOMDocument.idl

@@ -62,7 +62,7 @@ interface nsIDOMLocation;
  * http://dvcs.w3.org/hg/domcore/raw-file/tip/Overview.html
  */
 
-[scriptable, uuid(d53c3d3d-2413-4abc-b54e-11c5c8380776)]
+[scriptable, uuid(10034b87-384e-4e19-902c-c4edafb899be)]
 interface nsIDOMDocument : nsIDOMNode
 {
   readonly attribute nsIDOMDocumentType         doctype;
@@ -316,6 +316,12 @@ interface nsIDOMDocument : nsIDOMNode
    */
   readonly attribute DOMString      contentType;
 
+  /**
+   * True if this document is synthetic : stand alone image, video, audio file,
+   * etc.
+   */
+  readonly attribute boolean        mozSyntheticDocument;
+
   /**
    * Returns the script element whose script is currently being processed.
    *