Add layer name into frame viewer

webkit/renderer/compositor_bindings/web_content_layer_impl.h

Index: webkit/renderer/compositor_bindings/web_content_layer_impl.h
diff --git a/webkit/renderer/compositor_bindings/web_content_layer_impl.h b/webkit/renderer/compositor_bindings/web_content_layer_impl.h
index eb66abaedfa5e51d00bfd4a5a093b0feb35c38f6..89e64ae6bca56109fa7658482df3d2fc32df042d 100644
--- a/webkit/renderer/compositor_bindings/web_content_layer_impl.h
+++ b/webkit/renderer/compositor_bindings/web_content_layer_impl.h
@@ -5,6 +5,8 @@
 #ifndef WEBKIT_RENDERER_COMPOSITOR_BINDINGS_WEB_CONTENT_LAYER_IMPL_H_
 #define WEBKIT_RENDERER_COMPOSITOR_BINDINGS_WEB_CONTENT_LAYER_IMPL_H_
 
+#include <string>
+
 #include "base/memory/scoped_ptr.h"
 #include "cc/layers/content_layer_client.h"
 #include "third_party/WebKit/public/platform/WebContentLayer.h"
@@ -30,6 +32,7 @@ class WebContentLayerImpl : public WebKit::WebContentLayer,
   virtual WebKit::WebLayer* layer();
   virtual void setDoubleSided(bool double_sided);
   virtual void setDrawCheckerboardForMissingTiles(bool checkerboard);
+  std::string DebugName();
 
  protected:
   virtual ~WebContentLayerImpl();