Implement HiDPI support in Pepper dev interface

ppapi/proxy/ppb_graphics_2d_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_PPB_GRAPHICS_2D_PROXY_H_
 #define PPAPI_PPB_GRAPHICS_2D_PROXY_H_
 
 #include "ppapi/c/pp_bool.h"
 #include "ppapi/c/pp_completion_callback.h"
 #include "ppapi/c/pp_module.h"
@@ skipping 12 matching lines @@
 namespace ppapi {
 namespace proxy {
 
 class PPB_Graphics2D_Proxy : public InterfaceProxy {
  public:
   PPB_Graphics2D_Proxy(Dispatcher* dispatcher);
   virtual ~PPB_Graphics2D_Proxy();
 
   static PP_Resource CreateProxyResource(PP_Instance instance,
                                          const PP_Size& size,
-                                         PP_Bool is_always_opaque);
+                                         PP_Bool is_always_opaque,
+                                         float scale_fctor);
 
   // InterfaceProxy implementation.
   virtual bool OnMessageReceived(const IPC::Message& msg);
 
   static const ApiID kApiID = API_ID_PPB_GRAPHICS_2D;
 
  private:
   // Plugin->host message handlers.
   void OnHostMsgCreate(PP_Instance instance,
                        const PP_Size& size,
                        PP_Bool is_always_opaque,
+                       float scale,
                        HostResource* result);
   void OnHostMsgPaintImageData(const HostResource& graphics_2d,
                                const HostResource& image_data,
                                const PP_Point& top_left,
                                bool src_rect_specified,
                                const PP_Rect& src_rect);
   void OnHostMsgScroll(const HostResource& graphics_2d,
                        bool clip_specified,
                        const PP_Rect& clip,
                        const PP_Point& amount);
@@ skipping 12 matching lines @@
   pp::CompletionCallbackFactory<PPB_Graphics2D_Proxy,
                                 ProxyNonThreadSafeRefCount> callback_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(PPB_Graphics2D_Proxy);
 };
 
 }  // namespace proxy
 }  // namespace ppapi
 
 #endif  // PPAPI_PPB_GRAPHICS_2D_PROXY_H_