Fix GC hazards associated with event handlers on images only reachable from their current network loads, some of which are regressions from 241518. b=321054 r=darin sr=bzbarsky

git-svn-id: svn://10.0.0.236/trunk@198815 18797224-902f-48f8-a5cc-f745e15eee43

mozilla/content/html/document/src/nsImageDocument.cpp

@@ -484,6 +484,12 @@ nsImageDocument::ToggleImageSize()
   return NS_OK;
 }
 
+NS_IMETHODIMP
+nsImageDocument::OnStartRequest(imgIRequest* aRequest)
+{
+  return NS_OK;
+}
+
 NS_IMETHODIMP
 nsImageDocument::OnStartDecode(imgIRequest* aRequest)
 {
@@ -537,6 +543,13 @@ nsImageDocument::OnStopDecode(imgIRequest* aRequest,
   return NS_OK;
 }
 
+NS_IMETHODIMP
+nsImageDocument::OnStopRequest(imgIRequest* aRequest,
+                               PRBool aLastPart)
+{
+  return NS_OK;
+}
+
 NS_IMETHODIMP
 nsImageDocument::FrameChanged(imgIContainer* aContainer,
                               gfxIImageFrame* aFrame,