cc: Avoid expensive RenderingStats collection.

cc/heads_up_display_layer.cc

 // Copyright 2012 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 "cc/heads_up_display_layer.h"
 
 #include "base/debug/trace_event.h"
 #include "cc/heads_up_display_layer_impl.h"
 #include "cc/layer_tree_host.h"
 
 namespace cc {
 
 scoped_refptr<HeadsUpDisplayLayer> HeadsUpDisplayLayer::create()
 {
     return make_scoped_refptr(new HeadsUpDisplayLayer());
 }
 
 HeadsUpDisplayLayer::HeadsUpDisplayLayer()
     : Layer()
     , m_hasFontAtlas(false)
 {
     setBounds(gfx::Size(256, 128));
 }
 
 HeadsUpDisplayLayer::~HeadsUpDisplayLayer()
 {
 }
 
-void HeadsUpDisplayLayer::update(ResourceUpdateQueue&, const OcclusionTracker*, RenderingStats&)
+void HeadsUpDisplayLayer::update(ResourceUpdateQueue&, const OcclusionTracker*, RenderingStats*)
 {
     const LayerTreeDebugState& debugState = layerTreeHost()->debugState();
     int maxTextureSize = layerTreeHost()->rendererCapabilities().maxTextureSize;
 
     gfx::Size bounds;
     gfx::Transform matrix;
     matrix.MakeIdentity();
 
     if (debugState.showPlatformLayerTree || debugState.showHudRects()) {
         int width = std::min(maxTextureSize, layerTreeHost()->layoutViewportSize().width());
@@ skipping 29 matching lines @@
     Layer::pushPropertiesTo(layerImpl);
 
     if (!m_fontAtlas)
         return;
 
     HeadsUpDisplayLayerImpl* hudLayerImpl = static_cast<HeadsUpDisplayLayerImpl*>(layerImpl);
     hudLayerImpl->setFontAtlas(m_fontAtlas.Pass());
 }
 
 }  // namespace cc