toggle FPS counter in compositor

cc/layer_tree_host.h

 // 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.
 
 #ifndef CCLayerTreeHost_h
 #define CCLayerTreeHost_h
 
 #include "base/basictypes.h"
 #include "base/hash_tables.h"
 #include "base/memory/ref_counted.h"
@@ skipping 185 matching lines @@
     bool requestPartialTextureUpdate();
     void deleteTextureAfterCommit(scoped_ptr<CCPrioritizedTexture>);
 
     void setDeviceScaleFactor(float);
     float deviceScaleFactor() const { return m_deviceScaleFactor; }
 
     void setFontAtlas(scoped_ptr<CCFontAtlas>);
 
     HeadsUpDisplayLayerChromium* hudLayer() const { return m_hudLayer.get(); }
 
+    void setShowFPSCounter(bool show);
+
 protected:
     CCLayerTreeHost(CCLayerTreeHostClient*, const CCLayerTreeSettings&);
     bool initialize();
 
 private:
     typedef std::vector<scoped_refptr<LayerChromium> > LayerList;
 
     void initializeRenderer();
 
     void update(LayerChromium*, CCTextureUpdateQueue&, const CCOcclusionTracker*);
@@ skipping 33 matching lines @@
     scoped_ptr<CCPrioritizedTexture> m_surfaceMemoryPlaceholder;
 
     CCLayerTreeSettings m_settings;
 
     IntSize m_layoutViewportSize;
     IntSize m_deviceViewportSize;
     float m_deviceScaleFactor;
 
     bool m_visible;
 
+    bool m_showFPSCounter;
+
     typedef base::hash_map<WebKit::WebGraphicsContext3D*, scoped_refptr<RateLimiter> > RateLimiterMap;
     RateLimiterMap m_rateLimiters;
 
     float m_pageScaleFactor;
     float m_minPageScaleFactor, m_maxPageScaleFactor;
     WebKit::WebTransformationMatrix m_implTransform;
     bool m_triggerIdleUpdates;
 
     SkColor m_backgroundColor;
     bool m_hasTransparentBackground;
 
     typedef ScopedPtrVector<CCPrioritizedTexture> TextureList;
     TextureList m_deleteTextureAfterCommitList;
     size_t m_partialTextureUpdateRequests;
 
     static bool s_needsFilterContext;
 
     DISALLOW_COPY_AND_ASSIGN(CCLayerTreeHost);
 };
 
 }  // namespace cc
 
 #endif