Enable resize and layout for frames with RemoteFrame ancestors

Source/web/PageWidgetDelegate.cpp

Index: Source/web/PageWidgetDelegate.cpp
diff --git a/Source/web/PageWidgetDelegate.cpp b/Source/web/PageWidgetDelegate.cpp
index e2735262e119fcb1bb184f62b343489c2ab03ffb..7e2bcf57183d5c73080040c99862a442c9ef01ea 100644
--- a/Source/web/PageWidgetDelegate.cpp
+++ b/Source/web/PageWidgetDelegate.cpp
@@ -69,11 +69,18 @@ void PageWidgetDelegate::animate(Page* page, double monotonicFrameBeginTime)
     page->animator().serviceScriptedAnimations(monotonicFrameBeginTime);
 }
 
-void PageWidgetDelegate::layout(Page* page)
+void PageWidgetDelegate::layout(Page* page, LocalFrame* rootFrame)
 {
-    if (!page || !page->mainFrame())
+    if (!page)
         return;
-    page->animator().updateLayoutAndStyleForPainting();
+
+    if (!rootFrame) {

[dcheng, 2014/07/10 21:14:54]

How can we end up with a null pointer here? I only see one call to this in
WebViewImpl.cpp, and it passes in a local root (which by definition, can never
be null). Is there somewhere else calling this and passing in 0?

[kenrb, 2014/07/11 16:06:17]

See above.

+        if (!page->mainFrame() || !page->mainFrame()->isLocalFrame())
+            return;
+        rootFrame = toLocalFrame(page->mainFrame());
+    }
+
+    page->animator().updateLayoutAndStyleForPainting(rootFrame);
 }
 
 void PageWidgetDelegate::paint(Page* page, PageOverlayList* overlays, WebCanvas* canvas, const WebRect& rect, CanvasBackground background)