Add a skeleton gamepad resource.

webkit/plugins/ppapi/ppapi_plugin_instance.h

Index: webkit/plugins/ppapi/ppapi_plugin_instance.h
diff --git a/webkit/plugins/ppapi/ppapi_plugin_instance.h b/webkit/plugins/ppapi/ppapi_plugin_instance.h
index 89c5be1b2175dd52b6f6b48549a2ea746a8b618f..a1364601ddcf83dfd59d3e5f8a3d574708c6b2a7 100644
--- a/webkit/plugins/ppapi/ppapi_plugin_instance.h
+++ b/webkit/plugins/ppapi/ppapi_plugin_instance.h
@@ -40,6 +40,7 @@
 #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_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"
@@ -320,10 +321,6 @@ class WEBKIT_PLUGINS_EXPORT PluginInstance :
                    bool from_user_action);
   bool IsRectTopmost(const gfx::Rect& rect);
 
-  // Implementation of PPB_Gamepad.
-  void SampleGamepads(PP_Instance instance, PP_GamepadsSampleData* data)
-      OVERRIDE;
-
   // Implementation of PPP_Messaging.
   void HandleMessage(PP_Var message);
 
@@ -379,6 +376,8 @@ class WEBKIT_PLUGINS_EXPORT PluginInstance :
   virtual PP_Bool GetScreenSize(PP_Instance instance, PP_Size* size)
       OVERRIDE;
   virtual ::ppapi::thunk::PPB_Flash_API* GetFlashAPI() OVERRIDE;
+  virtual ::ppapi::thunk::PPB_Gamepad_API* GetGamepadAPI(PP_Instance instance)
+      OVERRIDE;
   virtual int32_t RequestInputEvents(PP_Instance instance,
                                      uint32_t event_classes) OVERRIDE;
   virtual int32_t RequestFilteringInputEvents(PP_Instance instance,
@@ -462,6 +461,16 @@ class WEBKIT_PLUGINS_EXPORT PluginInstance :
   bool ResetAsProxied();
 
  private:
+  // 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 {
+   public:
+    GamepadImpl(PluginDelegate* delegate);
+    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
@@ -642,6 +651,8 @@ class WEBKIT_PLUGINS_EXPORT PluginInstance :
   std::vector<PP_PrintPageNumberRange_Dev> ranges_;
 #endif  // OS_LINUX || OS_WIN
 
+  GamepadImpl gamepad_impl_;
+
   // The plugin print interface.
   const PPP_Printing_Dev* plugin_print_interface_;