Trigger repaint on first paint only on pending stylesheet decrement.

third_party/WebKit/Source/core/page/Page.cpp

Index: third_party/WebKit/Source/core/page/Page.cpp
diff --git a/third_party/WebKit/Source/core/page/Page.cpp b/third_party/WebKit/Source/core/page/Page.cpp
index 9830726680bd6e665bae72239def21426e537d17..474628f9ed6734da4330551aaf41361cafcb348c 100644
--- a/third_party/WebKit/Source/core/page/Page.cpp
+++ b/third_party/WebKit/Source/core/page/Page.cpp
@@ -241,7 +241,7 @@ void Page::setNeedsRecalcStyleInAllFrames()
 {
     for (Frame* frame = mainFrame(); frame; frame = frame->tree().traverseNext()) {
         if (frame->isLocalFrame())
-            toLocalFrame(frame)->document()->styleResolverChanged();
+            toLocalFrame(frame)->document()->styleEngine().resolverChanged(FullStyleUpdate);
     }
 }