[PPAPI] Compositor API implementation

ppapi/proxy/compositor_layer_resource.h

Index: ppapi/proxy/compositor_layer_resource.h
diff --git a/ppapi/proxy/compositor_layer_resource.h b/ppapi/proxy/compositor_layer_resource.h
index 6a23d9d535340b07ca5b20c0e1e957bed4b1cdf4..536fbb517a0193c5cd238b651fb85250366a5feb 100644
--- a/ppapi/proxy/compositor_layer_resource.h
+++ b/ppapi/proxy/compositor_layer_resource.h
@@ -9,6 +9,7 @@
 #include <vector>
 
 #include "ppapi/c/ppb_compositor_layer.h"
+#include "ppapi/proxy/compositor_resource.h"
 #include "ppapi/proxy/plugin_resource.h"
 #include "ppapi/proxy/ppapi_proxy_export.h"
 #include "ppapi/thunk/ppb_compositor_layer_api.h"
@@ -21,7 +22,8 @@ class PPAPI_PROXY_EXPORT CompositorLayerResource
       public thunk::PPB_CompositorLayer_API {
  public:
   CompositorLayerResource(Connection connection,
-                     PP_Instance instance);
+                          PP_Instance instance,
+                          base::WeakPtr<CompositorResource::Layer> layer);
 
  private:
   virtual ~CompositorLayerResource();
@@ -51,6 +53,8 @@ class PPAPI_PROXY_EXPORT CompositorLayerResource
   virtual int32_t SetSourceRect(const struct PP_FloatRect* rect) OVERRIDE;
   virtual int32_t SetPremultipliedAlpha(PP_Bool premult) OVERRIDE;
 
+  base::WeakPtr<CompositorResource::Layer> layer_;
+
   DISALLOW_COPY_AND_ASSIGN(CompositorLayerResource);
 };