Bug 1207355 (Part 4) - Request decodes intelligently in nsBulletFrame. r=tn

layout/generic/nsBulletFrame.cpp

@@ -712,9 +712,20 @@ nsBulletFrame::Notify(imgIRequest *aRequest, int32_t aType, const nsIntRect* aDa
     // Unconditionally start decoding for now.
     // XXX(seth): We eventually want to decide whether to do this based on
     // visibility. We should get that for free from bug 1091236.
-    if (aRequest == mImageRequest) {
-      mImageRequest->RequestDecode();
+    nsCOMPtr<imgIContainer> container;
+    aRequest->GetImage(getter_AddRefs(container));
+    if (container) {
+      // Retrieve the intrinsic size of the image.
+      int32_t width = 0;
+      int32_t height = 0;
+      container->GetWidth(&width);
+      container->GetHeight(&height);
+
+      // Request a decode at that size.
+      container->RequestDecodeForSize(IntSize(width, height),
+                                      imgIContainer::DECODE_FLAGS_DEFAULT);
     }
+
     InvalidateFrame();
   }