cc: Add TileManager interface that allows LTHI to determine when to activate pending tree.

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 1674 matching lines @@
 void LayerTreeHostImpl::renderingStats(RenderingStats* stats) const
 {
     stats->numFramesSentToScreen = fpsCounter()->currentFrameNumber();
     stats->droppedFrameCount = fpsCounter()->droppedFrameCount();
     stats->numImplThreadScrolls = m_numImplThreadScrolls;
     stats->numMainThreadScrolls = m_numMainThreadScrolls;
     stats->numLayersDrawn = m_cumulativeNumLayersDrawn;
     stats->numMissingTiles = m_cumulativeNumMissingTiles;
 
     if (m_tileManager)
-        m_tileManager->renderingStats(stats);
+        m_tileManager->GetRenderingStats(stats);
 }
 
 void LayerTreeHostImpl::sendManagedMemoryStats(
     size_t memoryVisibleBytes,
     size_t memoryVisibleAndNearbyBytes,
     size_t memoryUseBytes)
 {
     if (!renderer())
       return;
 
@@ skipping 30 matching lines @@
     ScrollbarAnimationController* scrollbarController = layer->scrollbarAnimationController();
     double monotonicTime = (time - base::TimeTicks()).InSecondsF();
     if (scrollbarController && scrollbarController->animate(monotonicTime))
         m_client->setNeedsRedrawOnImplThread();
 
     for (size_t i = 0; i < layer->children().size(); ++i)
         animateScrollbarsRecursive(layer->children()[i], time);
 }
 
 }  // namespace cc