Allow WebExternalTextureLayerClient to work with mailboxes.

webkit/plugins/ppapi/ppapi_plugin_instance.h

 // Copyright (c) 2012 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 WEBKIT_PLUGINS_PPAPI_PPAPI_PLUGIN_INSTANCE_H_
 #define WEBKIT_PLUGINS_PPAPI_PPAPI_PLUGIN_INSTANCE_H_
 
 #include <set>
 #include <string>
 #include <vector>
@@ skipping 442 matching lines @@
   virtual void DeliverFrame(PP_Instance instance,
                             PP_Resource decrypted_frame,
                             const PP_DecryptedFrameInfo* frame_info) OVERRIDE;
   virtual void DeliverSamples(PP_Instance instance,
                               PP_Resource audio_frames,
                               const PP_DecryptedBlockInfo* block_info) OVERRIDE;
 
   // TextureLayerClient implementation.
   virtual unsigned prepareTexture(cc::ResourceUpdateQueue&) OVERRIDE;
   virtual WebKit::WebGraphicsContext3D* context() OVERRIDE;
+  virtual bool prepareTextureMailbox(cc::TextureMailbox*) OVERRIDE;
 
   // Reset this instance as proxied. Assigns the instance a new module, resets
   // cached interfaces to point to the out-of-process proxy and re-sends
   // DidCreate, DidChangeView, and HandleDocumentLoad (if necessary).
   // This should be used only when switching a trusted NaCl in-process instance
   // to an untrusted NaCl out-of-process instance.
   PP_NaClResult ResetAsProxied(scoped_refptr<PluginModule> module);
 
   // Checks whether this is a valid instance of the given module. After calling
   // ResetAsProxied above, a NaCl plugin instance's module changes, so external
@@ skipping 305 matching lines @@
   scoped_ptr<ContentDecryptorDelegate> content_decryptor_delegate_;
 
   friend class PpapiPluginInstanceTest;
   DISALLOW_COPY_AND_ASSIGN(PluginInstance);
 };
 
 }  // namespace ppapi
 }  // namespace webkit
 
 #endif  // WEBKIT_PLUGINS_PPAPI_PPAPI_PLUGIN_INSTANCE_H_