Add layer name into frame viewer

cc/layers/layer.h

 // Copyright 2010 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_LAYERS_LAYER_H_
 #define CC_LAYERS_LAYER_H_
 
 #include <string>
 
 #include "base/callback.h"
@@ skipping 29 matching lines @@
 class LayerAnimationEventObserver;
 class LayerImpl;
 class LayerTreeHost;
 class LayerTreeImpl;
 class PriorityCalculator;
 class RenderingStatsInstrumentation;
 class ResourceUpdateQueue;
 class ScrollbarLayer;
 struct AnimationEvent;
 
+class CC_EXPORT LayerClient {
+  public:
+    virtual std::string DebugName() = 0;
+  protected:
+    virtual ~LayerClient() {}
+};
+
 // Base class for composited layers. Special layer types are derived from
 // this class.
 class CC_EXPORT Layer : public base::RefCounted<Layer>,
                         public LayerAnimationValueObserver {
  public:
   enum LayerIdLabels {
     INVALID_ID = -1,
   };
 
   static scoped_refptr<Layer> Create();
@@ skipping 226 matching lines @@
   virtual bool DrawsContent() const;
   virtual void SavePaintProperties();
   // Returns true iff any resources were updated that need to be committed.
   virtual bool Update(ResourceUpdateQueue* queue,
                       const OcclusionTracker* occlusion);
   virtual bool NeedMoreUpdates();
   virtual void SetIsMask(bool is_mask) {}
   virtual void ReduceMemoryUsage() {}
 
   void SetDebugName(const std::string& debug_name);
+  virtual std::string DebugName();
+
+  void SetLayerClient(LayerClient* client) { client_ = client; }
+
   void SetCompositingReasons(CompositingReasons reasons);
 
   virtual void PushPropertiesTo(LayerImpl* layer);
 
   void CreateRenderSurface();
   void ClearRenderSurface();
 
   // The contents scale converts from logical, non-page-scaled pixels to target
   // pixels. The contents scale is 1 for the root layer as it is already in
   // physical pixels. By default contents scale is forced to be 1 except for
@@ skipping 201 matching lines @@
 
   gfx::Transform transform_;
   gfx::Transform sublayer_transform_;
 
   // Replica layer used for reflections.
   scoped_refptr<Layer> replica_layer_;
 
   // Transient properties.
   float raster_scale_;
 
+  LayerClient* client_;
+
   ScopedPtrVector<CopyOutputRequest> copy_requests_;
 
   base::Closure did_scroll_callback_;
 
   DrawProperties<Layer, RenderSurface> draw_properties_;
 
   PaintProperties paint_properties_;
 
   DISALLOW_COPY_AND_ASSIGN(Layer);
 };
 
 }  // namespace cc
 
 #endif  // CC_LAYERS_LAYER_H_