Turn off computation of the interest rect in cc in synchronized paint mode.

third_party/WebKit/Source/web/tests/sim/SimCompositor.cpp

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "config.h"
 #include "web/tests/sim/SimCompositor.h"
 
 #include "core/frame/FrameView.h"
 #include "core/layout/LayoutView.h"
 #include "core/layout/compositing/CompositedLayerMapping.h"
 #include "core/paint/PaintLayer.h"
 #include "platform/graphics/ContentLayerDelegate.h"
 #include "public/platform/WebRect.h"
+#include "ui/gfx/geometry/rect.h"
 #include "web/WebLocalFrameImpl.h"
 #include "web/WebViewImpl.h"
 #include "web/tests/sim/SimDisplayItemList.h"
 #include "wtf/CurrentTime.h"
 
 namespace blink {
 
 static void paintLayers(PaintLayer& layer, SimDisplayItemList& displayList)
 {
     if (layer.isAllowedToQueryCompositingState() && layer.compositingState() == PaintsIntoOwnBacking) {
         CompositedLayerMapping* mapping = layer.compositedLayerMapping();
         GraphicsLayer* graphicsLayer = mapping->mainGraphicsLayer();
         if (graphicsLayer->hasTrackedPaintInvalidations()) {
+            gfx::Rect recordingViewport(0, 0, layer.size().width(), layer.size().height());
             ContentLayerDelegate* delegate = graphicsLayer->contentLayerDelegateForTesting();
-            delegate->paintContents(&displayList, WebRect(0, 0, layer.size().width(), layer.size().height()));
+            delegate->paintContents(&displayList, &recordingViewport);
             graphicsLayer->resetTrackedPaintInvalidations();
         }
     }
     for (PaintLayer* child = layer.firstChild(); child; child = child->nextSibling())
         paintLayers(*child, displayList);
 }
 
 static void paintFrames(LocalFrame& root, SimDisplayItemList& displayList)
 {
     for (Frame* frame = &root; frame; frame = frame->tree().traverseNext(&root)) {
@@ skipping 52 matching lines @@
 
     LocalFrame* root = m_webViewImpl->mainFrameImpl()->frame();
 
     SimDisplayItemList displayList;
     paintFrames(*root, displayList);
 
     return displayList;
 }
 
 } // namespace blink