Check rect under-invalidations

third_party/WebKit/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 2924 matching lines @@
             continue;
         if (LayoutViewItem layoutView = toLocalFrame(frame)->contentLayoutItem()) {
             layoutView.frameView()->m_isTrackingPaintInvalidations = trackPaintInvalidations;
             layoutView.compositor()->setTracksPaintInvalidations(trackPaintInvalidations);
         }
     }
 
     TRACE_EVENT_INSTANT1(TRACE_DISABLED_BY_DEFAULT("blink.invalidation"),
         "FrameView::setTracksPaintInvalidations", TRACE_EVENT_SCOPE_GLOBAL, "enabled", trackPaintInvalidations);
 
-    resetTrackedPaintInvalidations();
     m_isTrackingPaintInvalidations = trackPaintInvalidations;
 }
 
-void FrameView::resetTrackedPaintInvalidations()
-{
-    if (LayoutViewItem layoutView = this->layoutViewItem())
-        layoutView.compositor()->resetTrackedPaintInvalidationRects();
-}
-
 void FrameView::addResizerArea(LayoutBox& resizerBox)
 {
     if (!m_resizerAreas)
         m_resizerAreas = adoptPtr(new ResizerAreaSet);
     m_resizerAreas->add(&resizerBox);
 }
 
 void FrameView::removeResizerArea(LayoutBox& resizerBox)
 {
     if (!m_resizerAreas)
@@ skipping 1186 matching lines @@
     return m_subtreeThrottled || (m_hiddenForThrottling && m_crossOriginForThrottling);
 }
 
 LayoutBox& FrameView::boxForScrollControlPaintInvalidation() const
 {
     ASSERT(!layoutViewItem().isNull());
     return *layoutView();
 }
 
 } // namespace blink