Convert the flash clipboard API to thunk system.

ppapi/proxy/ppb_flash_clipboard_proxy.h

Index: ppapi/proxy/ppb_flash_clipboard_proxy.h
diff --git a/ppapi/proxy/ppb_flash_clipboard_proxy.h b/ppapi/proxy/ppb_flash_clipboard_proxy.h
index 79505fe5870200927e09b74f9c8ca573f16bc258..c337f82d6ccf54e6d302f36d13b10dea8e35e16d 100644
--- a/ppapi/proxy/ppb_flash_clipboard_proxy.h
+++ b/ppapi/proxy/ppb_flash_clipboard_proxy.h
@@ -7,6 +7,7 @@
 
 #include "ppapi/c/pp_instance.h"
 #include "ppapi/proxy/interface_proxy.h"
+#include "ppapi/thunk/ppb_flash_clipboard_api.h"
 
 struct PPB_Flash_Clipboard;
 
@@ -16,33 +17,44 @@ namespace proxy {
 class SerializedVarReceiveInput;
 class SerializedVarReturnValue;
 
-class PPB_Flash_Clipboard_Proxy : public InterfaceProxy {
+class PPB_Flash_Clipboard_Proxy
+    : public InterfaceProxy,
+      public thunk::PPB_Flash_Clipboard_FunctionAPI {
  public:
   PPB_Flash_Clipboard_Proxy(Dispatcher* dispatcher);
   virtual ~PPB_Flash_Clipboard_Proxy();
 
-  static const PPB_Flash_Clipboard* GetInterface();
+  // FunctionGroupBase overrides.
+  thunk::PPB_Flash_Clipboard_FunctionAPI* AsPPB_Flash_Clipboard_FunctionAPI()
+      OVERRIDE;
+
+  // PPB_Flash_Clipboard_FunctionAPI implementation.
+  virtual PP_Bool IsFormatAvailable(PP_Instance instance,
+                                    PP_Flash_Clipboard_Type clipboard_type,
+                                    PP_Flash_Clipboard_Format format) OVERRIDE;
+  virtual PP_Var ReadPlainText(PP_Instance instance,
+                               PP_Flash_Clipboard_Type clipboard_type) OVERRIDE;
+  virtual int32_t WritePlainText(PP_Instance instance,
+                                 PP_Flash_Clipboard_Type clipboard_type,
+                                 const PP_Var& text) OVERRIDE;
 
   // InterfaceProxy implementation.
   virtual bool OnMessageReceived(const IPC::Message& msg);
 
+  static const ApiID kApiID = API_ID_PPB_FLASH_CLIPBOARD;
+
  private:
   // Message handlers.
-  void OnMsgIsFormatAvailable(PP_Instance instance_id,
+  void OnMsgIsFormatAvailable(PP_Instance instance,
                               int clipboard_type,
                               int format,
                               bool* result);
-  void OnMsgReadPlainText(PP_Instance instance_id,
+  void OnMsgReadPlainText(PP_Instance instance,
                           int clipboard_type,
                           SerializedVarReturnValue result);
-  void OnMsgWritePlainText(PP_Instance instance_id,
+  void OnMsgWritePlainText(PP_Instance instance,
                            int clipboard_type,
                            SerializedVarReceiveInput text);
-
-  // When this proxy is in the host side, this value caches the interface
-  // pointer so we don't have to retrieve it from the dispatcher each time.
-  // In the plugin, this value is always NULL.
-  const PPB_Flash_Clipboard* ppb_flash_clipboard_impl_;
 };
 
 }  // namespace proxy