Backout 761790684f3b (Bug 553366) for suspicion of causing tsvg_opacity regression.

content/base/public/nsIDocument.h

@@ -705,14 +705,6 @@ public:
    */
   virtual void FlushPendingNotifications(mozFlushType aType) = 0;
 
-  /**
-   * Calls FlushPendingNotifications on any external resources this document
-   * has. If this document has no external resources or is an external resource
-   * itself this does nothing. This should only be called with
-   * aType >= Flush_Style.
-   */
-  virtual void FlushExternalResources(mozFlushType aType) = 0;
-
   nsBindingManager* BindingManager() const
   {
     return mNodeInfoManager->GetBindingManager();

content/base/src/nsDocument.cpp

@@ -6445,26 +6445,6 @@ nsDocument::FlushPendingNotifications(mozFlushType aType)
   }
 }
 
-static PRBool
-Flush(nsIDocument* aDocument, void* aData)
-{
-  const mozFlushType* type = static_cast<const mozFlushType*>(aData);
-  aDocument->FlushPendingNotifications(*type);
-  return PR_TRUE;
-}
-
-void
-nsDocument::FlushExternalResources(mozFlushType aType)
-{
-  NS_ASSERTION(aType >= Flush_Style,
-    "should only need to flush for style or higher in external resources");
-
-  if (GetDisplayDocument()) {
-    return;
-  }
-  EnumerateExternalResources(Flush, &aType);
-}
-
 nsIScriptEventManager*
 nsDocument::GetScriptEventManager()
 {

content/base/src/nsDocument.h

@@ -704,7 +704,6 @@ public:
                                 nsIStyleRule* aStyleRule);
 
   virtual void FlushPendingNotifications(mozFlushType aType);
-  virtual void FlushExternalResources(mozFlushType aType);
   virtual nsIScriptEventManager* GetScriptEventManager();
   virtual void SetXMLDeclaration(const PRUnichar *aVersion,
                                  const PRUnichar *aEncoding,

layout/base/nsPresShell.cpp

@@ -4589,14 +4589,6 @@ PresShell::FlushPendingNotifications(mozFlushType aType)
     // batching if we only have style reresolve
     nsIViewManager::UpdateViewBatch batch(mViewManager);
 
-    // We need to make sure external resource documents are flushed too (for
-    // example, svg filters that reference a filter in an external document
-    // need the frames in the external document to be constructed for the
-    // filter to work). We only need external resources to be flushed when the
-    // main document is flushing >= Flush_Frames, so we flush external
-    // resources here instead of nsDocument::FlushPendingNotifications.
-    mDocument->FlushExternalResources(aType);
-
     // Force flushing of any pending content notifications that might have
     // queued up while our event was pending.  That will ensure that we don't
     // construct frames for content right now that's still waiting to be