cc: add DevTools instrumentation for impl-side frames

cc/trees/layer_tree_host_impl.h

Index: cc/trees/layer_tree_host_impl.h
diff --git a/cc/trees/layer_tree_host_impl.h b/cc/trees/layer_tree_host_impl.h
index 3d9f1e9fe90366f63215a908781edb84da2cadfe..d3ed318815bad061c8892a919c45bd97e45fabdc 100644
--- a/cc/trees/layer_tree_host_impl.h
+++ b/cc/trees/layer_tree_host_impl.h
@@ -104,7 +104,8 @@ class CC_EXPORT LayerTreeHostImpl
       LayerTreeHostImplClient* client,
       Proxy* proxy,
       RenderingStatsInstrumentation* rendering_stats_instrumentation,
-      SharedBitmapManager* manager);
+      SharedBitmapManager* manager,
+      int id);
   virtual ~LayerTreeHostImpl();
 
   // InputHandler implementation
@@ -423,7 +424,8 @@ class CC_EXPORT LayerTreeHostImpl
       LayerTreeHostImplClient* client,
       Proxy* proxy,
       RenderingStatsInstrumentation* rendering_stats_instrumentation,
-      SharedBitmapManager* manager);
+      SharedBitmapManager* manager,
+      int id);
 
   // Virtual for testing.
   virtual void AnimateLayers(base::TimeTicks monotonic_time,
@@ -637,6 +639,7 @@ class CC_EXPORT LayerTreeHostImpl
   base::Closure tree_activation_callback_;
 
   SharedBitmapManager* shared_bitmap_manager_;
+  int id_;
 
   DISALLOW_COPY_AND_ASSIGN(LayerTreeHostImpl);
 };