toggle FPS counter in compositor

cc/heads_up_display_layer_impl.h

 // 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.
 
 #ifndef CC_HEADS_UP_DISPLAY_LAYER_IMPL_H_
 #define CC_HEADS_UP_DISPLAY_LAYER_IMPL_H_
 
 #include "base/memory/scoped_ptr.h"
 #include "base/time.h"
 #include "cc/cc_export.h"
@@ skipping 13 matching lines @@
 
 class CC_EXPORT HeadsUpDisplayLayerImpl : public LayerImpl {
 public:
     static scoped_ptr<HeadsUpDisplayLayerImpl> create(int id)
     {
         return make_scoped_ptr(new HeadsUpDisplayLayerImpl(id));
     }
     virtual ~HeadsUpDisplayLayerImpl();
 
     void setFontAtlas(scoped_ptr<FontAtlas>);
+    void setShowFPSCounter(bool);
 
     virtual void willDraw(ResourceProvider*) OVERRIDE;
     virtual void appendQuads(QuadSink&, AppendQuadsData&) OVERRIDE;
     void updateHudTexture(ResourceProvider*);
     virtual void didDraw(ResourceProvider*) OVERRIDE;
 
     virtual void didLoseContext() OVERRIDE;
 
     virtual bool layerIsAlwaysDamaged() const OVERRIDE;
 
 private:
     explicit HeadsUpDisplayLayerImpl(int);
 
     virtual const char* layerTypeAsString() const OVERRIDE;
 
     void drawHudContents(SkCanvas*);
     int drawFPSCounter(SkCanvas*, FrameRateCounter*);
     void drawFPSCounterText(SkCanvas*, SkPaint&, FrameRateCounter*, SkRect);
     void drawFPSCounterGraph(SkCanvas*, SkPaint&, FrameRateCounter*, SkRect);
     void drawDebugRects(SkCanvas*, DebugRectHistory*);
 
     scoped_ptr<FontAtlas> m_fontAtlas;
     scoped_ptr<ScopedTexture> m_hudTexture;
     scoped_ptr<SkCanvas> m_hudCanvas;
 
     double m_averageFPS;
     double m_stdDeviation;
 
     base::TimeTicks textUpdateTime;
+
+    bool m_showFPSCounter;
 };
 
 }  // namespace cc
 
 #endif  // CC_HEADS_UP_DISPLAY_LAYER_IMPL_H_