cc: Avoid expensive RenderingStats collection.

cc/layer_tree_host_impl.cc

 // Copyright 2011 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/layer_tree_host_impl.h"
 
 #include <algorithm>
 
 #include "base/basictypes.h"
 #include "base/debug/trace_event.h"
@@ skipping 1030 matching lines @@
     m_outputSurface.reset();
 
     if (!outputSurface->BindToClient(this))
         return false;
 
     scoped_ptr<ResourceProvider> resourceProvider = ResourceProvider::create(outputSurface.get());
     if (!resourceProvider)
         return false;
 
     if (m_settings.implSidePainting)
-      m_tileManager.reset(new TileManager(this, resourceProvider.get(), m_settings.numRasterThreads));
+      m_tileManager.reset(new TileManager(this, resourceProvider.get(), m_settings.numRasterThreads, m_settings.recordRenderingStats));
 
     if (outputSurface->Capabilities().has_parent_compositor)
         m_renderer = DelegatingRenderer::Create(this, outputSurface.get(), resourceProvider.get());
     else if (outputSurface->Context3D())
         m_renderer = GLRenderer::create(this, outputSurface.get(), resourceProvider.get());
     else if (outputSurface->SoftwareDevice())
         m_renderer = SoftwareRenderer::create(this, resourceProvider.get(), outputSurface->SoftwareDevice());
     if (!m_renderer)
         return false;
 
@@ skipping 632 matching lines @@
     LayerImpl* layer = getNonCompositedContentLayerRecursive(tree->RootLayer());
     return layer ? layer->getPicture() : skia::RefPtr<SkPicture>();
 }
 
 void LayerTreeHostImpl::savePaintTime(const base::TimeDelta& totalPaintTime)
 {
     m_paintTimeCounter->SavePaintTime(totalPaintTime);
 }
 
 }  // namespace cc