[PPAPI] Add browser tests for compositor API

ppapi/proxy/compositor_layer_resource.h

 // Copyright 2014 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 PPAPI_PROXY_COMPOSITOR_LAYER_RESOURCE_H_
 #define PPAPI_PROXY_COMPOSITOR_LAYER_RESOURCE_H_
 
 #include "ppapi/c/ppb_compositor_layer.h"
 #include "ppapi/proxy/plugin_resource.h"
 #include "ppapi/proxy/ppapi_proxy_export.h"
 #include "ppapi/shared_impl/compositor_layer_data.h"
 #include "ppapi/shared_impl/scoped_pp_resource.h"
 #include "ppapi/thunk/ppb_compositor_layer_api.h"
 
 namespace ppapi {
 namespace proxy {
 
 class CompositorResource;
 
 class PPAPI_PROXY_EXPORT CompositorLayerResource
     : public PluginResource,
       public thunk::PPB_CompositorLayer_API {
  public:
   // Release callback for texture or image layer.
   typedef base::Callback<void(uint32_t, bool)> ReleaseCallback;
 
   CompositorLayerResource(Connection connection,
                           PP_Instance instance,
-                          const CompositorResource* compositor);
+                          scoped_refptr<CompositorResource> compositor);
 
   const CompositorLayerData& data() const { return data_; }
   const ReleaseCallback& release_callback() const {
     return release_callback_;
   }
   void ResetReleaseCallback() { release_callback_.Reset(); }
   void Invalidate() { compositor_ = NULL; }
 
  private:
   enum LayerType {
@@ skipping 29 matching lines @@
   virtual int32_t SetSourceRect(const PP_FloatRect* rect) OVERRIDE;
   virtual int32_t SetPremultipliedAlpha(PP_Bool premult) OVERRIDE;
 
   bool SetType(LayerType type);
   int32_t CheckForSetTextureAndImage(
       LayerType type,
       const scoped_refptr<TrackedCallback>& release_callback);
 
   // The CompositorResource which own the layer. The layer is invalidated if
   // compositor_ is NULL.
-  const CompositorResource* compositor_;
+  scoped_refptr<CompositorResource> compositor_;
 
   // Release callback for uncommitted texture or image. When CommitLayers() on
   // the compositor_ is called, the callback will be copied into a map in the
   // compositor_, and it will be reset to NULL.
   ReleaseCallback release_callback_;
 
   // Size of texture or image. It is used to verify the rect arg of
   // SetSourceRect().
   PP_FloatSize source_size_;
 
   // Layer data.
   CompositorLayerData data_;
 
   DISALLOW_COPY_AND_ASSIGN(CompositorLayerResource);
 };
 
 }  // namespace proxy
 }  // namespace ppapi
 
 #endif  // PPAPI_PROXY_COMPOSITOR_LAYER_RESOURCE_H_