Implement HiDPI support in Pepper dev interface

ppapi/proxy/resource_creation_proxy.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 PPAPI_PROXY_RESOURCE_CREATION_PROXY_H_
 #define PPAPI_PROXY_RESOURCE_CREATION_PROXY_H_
 
 #include <string>
 
 #include "base/basictypes.h"
@@ skipping 99 matching lines @@
   virtual PP_Resource CreateFileChooser(
       PP_Instance instance,
       PP_FileChooserMode_Dev mode,
       const char* accept_types) OVERRIDE;
   virtual PP_Resource CreateFlashDeviceID(PP_Instance instance) OVERRIDE;
   virtual PP_Resource CreateFlashMenu(PP_Instance instance,
                                       const PP_Flash_Menu* menu_data) OVERRIDE;
   virtual PP_Resource CreateFlashMessageLoop(PP_Instance instance) OVERRIDE;
   virtual PP_Resource CreateGraphics2D(PP_Instance pp_instance,
                                        const PP_Size& size,
-                                       PP_Bool is_always_opaque) OVERRIDE;
+                                       PP_Bool is_always_opaque,
+                                       float scale) OVERRIDE;
   virtual PP_Resource CreateGraphics3D(PP_Instance instance,
                                        PP_Resource share_context,
                                        const int32_t* attrib_list) OVERRIDE;
   virtual PP_Resource CreateGraphics3DRaw(
       PP_Instance instance,
       PP_Resource share_context,
       const int32_t* attrib_list) OVERRIDE;
   virtual PP_Resource CreateHostResolverPrivate(PP_Instance instance) OVERRIDE;
   virtual PP_Resource CreateNetworkMonitor(
       PP_Instance instance,
@@ skipping 22 matching lines @@
   virtual bool OnMessageReceived(const IPC::Message& msg) OVERRIDE;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(ResourceCreationProxy);
 };
 
 }  // namespace proxy
 }  // namespace ppapi
 
 #endif  // PPAPI_PROXY_RESOURCE_CREATION_PROXY_H_