Refactor the way singleton-style resources are exposed via PPB_Instance

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 20 matching lines @@
 #include "ppapi/c/ppb_input_event.h"
 #include "ppapi/c/ppb_gamepad.h"
 #include "ppapi/c/ppp_graphics_3d.h"
 #include "ppapi/c/ppp_input_event.h"
 #include "ppapi/c/ppp_messaging.h"
 #include "ppapi/c/ppp_mouse_lock.h"
 #include "ppapi/c/private/ppb_content_decryptor_private.h"
 #include "ppapi/c/private/ppp_instance_private.h"
 #include "ppapi/shared_impl/ppb_instance_shared.h"
 #include "ppapi/shared_impl/ppb_view_shared.h"
-#include "ppapi/thunk/ppb_flash_clipboard_api.h"
-#include "ppapi/thunk/ppb_flash_functions_api.h"
 #include "ppapi/thunk/ppb_gamepad_api.h"
 #include "ppapi/thunk/resource_creation_api.h"
 #include "ppapi/shared_impl/tracked_callback.h"
 #include "third_party/skia/include/core/SkRefCnt.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/platform/WebCanvas.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/platform/WebString.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebPlugin.h"
 #include "ui/base/ime/text_input_type.h"
 #include "ui/gfx/rect.h"
 #include "webkit/plugins/ppapi/plugin_delegate.h"
@@ skipping 306 matching lines @@
   virtual void NumberOfFindResultsChanged(PP_Instance instance,
                                           int32_t total,
                                           PP_Bool final_result) OVERRIDE;
   virtual void SelectedFindResultChanged(PP_Instance instance,
                                          int32_t index) OVERRIDE;
   virtual PP_Bool SetFullscreen(PP_Instance instance,
                                 PP_Bool fullscreen) OVERRIDE;
   virtual PP_Bool GetScreenSize(PP_Instance instance, PP_Size* size)
       OVERRIDE;
   virtual ::ppapi::thunk::PPB_Flash_API* GetFlashAPI() OVERRIDE;
-  virtual ::ppapi::thunk::PPB_Flash_Clipboard_API* GetFlashClipboardAPI(
-      PP_Instance instance) OVERRIDE;
-  virtual ::ppapi::thunk::PPB_Flash_Functions_API* GetFlashFunctionsAPI(
-      PP_Instance instance) OVERRIDE;
-  virtual ::ppapi::thunk::PPB_Gamepad_API* GetGamepadAPI(PP_Instance instance)
-      OVERRIDE;
+  virtual ::ppapi::Resource* GetSingletonResource(PP_Instance instance,
+      ::ppapi::SingletonResourceID id) OVERRIDE;
   virtual int32_t RequestInputEvents(PP_Instance instance,
                                      uint32_t event_classes) OVERRIDE;
   virtual int32_t RequestFilteringInputEvents(PP_Instance instance,
                                               uint32_t event_classes) OVERRIDE;
   virtual void ClearInputEventRequest(PP_Instance instance,
                                       uint32_t event_classes) OVERRIDE;
   virtual void ClosePendingUserGesture(PP_Instance instance,
                                        PP_TimeTicks timestamp);
   virtual void ZoomChanged(PP_Instance instance, double factor) OVERRIDE;
   virtual void ZoomLimitsChanged(PP_Instance instance,
@@ skipping 74 matching lines @@
   // proxy and re-sends DidCreate, DidChangeView, and HandleDocumentLoad (if
   // necessary).
   // This is for use with the NaCl proxy.
   bool ResetAsProxied(scoped_refptr<PluginModule> module);
 
  private:
   friend class PpapiUnittest;
 
   // Implements PPB_Gamepad_API. This is just to avoid having an excessive
   // number of interfaces implemented by PluginInstance.
-  class GamepadImpl : public ::ppapi::thunk::PPB_Gamepad_API {
+  class GamepadImpl : public ::ppapi::thunk::PPB_Gamepad_API,
+                      public ::ppapi::Resource {
    public:
     explicit GamepadImpl(PluginDelegate* delegate);
+    // Resource implementation.
+    virtual ::ppapi::thunk::PPB_Gamepad_API* AsPPB_Gamepad_API() OVERRIDE;
     virtual void Sample(PP_GamepadsSampleData* data) OVERRIDE;
    private:
     PluginDelegate* delegate_;
   };
 
   // See the static Create functions above for creating PluginInstance objects.
   // This constructor is private so that we can hide the PPP_Instance_Combined
   // details while still having 1 constructor to maintain for member
   // initialization.
   PluginInstance(PluginDelegate* delegate,
@@ skipping 270 matching lines @@
   // calls and handles PPB_ContentDecryptor_Private calls.
   scoped_ptr<ContentDecryptorDelegate> content_decryptor_delegate_;
 
   DISALLOW_COPY_AND_ASSIGN(PluginInstance);
 };
 
 }  // namespace ppapi
 }  // namespace webkit
 
 #endif  // WEBKIT_PLUGINS_PPAPI_PPAPI_PLUGIN_INSTANCE_H_