Enable resize and layout for frames with RemoteFrame ancestors

Source/core/frame/FrameView.cpp

 /*
  * Copyright (C) 1998, 1999 Torben Weis <weis@kde.org>
  *                     1999 Lars Knoll <knoll@kde.org>
  *                     1999 Antti Koivisto <koivisto@kde.org>
  *                     2000 Dirk Mueller <mueller@kde.org>
  * Copyright (C) 2004, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.
  *           (C) 2006 Graham Dennis (graham.dennis@gmail.com)
  *           (C) 2006 Alexey Proskuryakov (ap@nypop.com)
  * Copyright (C) 2009 Google Inc. All rights reserved.
  *
@@ skipping 1143 matching lines @@
     DisableCompositingQueryAsserts disabler;
 
     if (m_slowRepaintObjectCount > 0)
         return true;
 
     if (contentsInCompositedLayer())
         return false;
 
     // The chromium compositor does not support scrolling a non-composited frame within a composited page through
     // the fast scrolling path, so force slow scrolling in that case.
-    if (m_frame->owner() && !hasCompositedContent() && m_frame->page() && m_frame->page()->mainFrame()->isLocalFrame() && m_frame->page()->deprecatedLocalMainFrame()->view()->hasCompositedContent())
+    if (m_frame->owner() && !hasCompositedContent() && m_frame->page() && m_frame->localFrameRoot()->view()->hasCompositedContent())

[eseidel, 2014/07/11 16:33:03]

Folks more active in the compositor or repaint system than I could better
comment on this codepath.

         return true;
 
     if (m_isOverlapped && considerOverlap)
         return true;
 
     if (m_cannotBlitToWindow)
         return true;
 
     if (!m_contentIsOpaque)
         return true;
@@ skipping 1633 matching lines @@
 
     updateLayoutAndStyleIfNeededRecursive();
 
     if (RenderView* view = renderView()) {
         TRACE_EVENT_INSTANT1(TRACE_DISABLED_BY_DEFAULT("devtools.timeline"), "UpdateLayerTree", "frame", m_frame.get());
         // FIXME(361045): remove InspectorInstrumentation calls once DevTools Timeline migrates to tracing.
         InspectorInstrumentation::willUpdateLayerTree(m_frame.get());
 
         view->compositor()->updateIfNeededRecursive();
 
-        if (view->compositor()->inCompositingMode() && m_frame->isMainFrame())
+        if (view->compositor()->inCompositingMode() && m_frame->isLocalRoot())
             m_frame->page()->scrollingCoordinator()->updateAfterCompositingChangeIfNeeded();
 
         updateCompositedSelectionBoundsIfNeeded();
 
         InspectorInstrumentation::didUpdateLayerTree(m_frame.get());
 
         invalidateTreeIfNeededRecursive();
     }
 
     scrollContentsIfNeededRecursive();
@@ skipping 447 matching lines @@
 void FrameView::willRemoveScrollbar(Scrollbar* scrollbar, ScrollbarOrientation orientation)
 {
     ScrollableArea::willRemoveScrollbar(scrollbar, orientation);
     if (AXObjectCache* cache = axObjectCache()) {
         cache->remove(scrollbar);
         cache->handleScrollbarUpdate(this);
     }
 }
 
 } // namespace WebCore