Revise gamepad interface

webkit/plugins/ppapi/event_conversion.h

Index: webkit/plugins/ppapi/event_conversion.h
diff --git a/webkit/plugins/ppapi/event_conversion.h b/webkit/plugins/ppapi/event_conversion.h
index b9b400416118b72d826c67f01c72ad1ff2f3c130..573e5b6e042cff0c91022b5d0df140652f5f9906 100644
--- a/webkit/plugins/ppapi/event_conversion.h
+++ b/webkit/plugins/ppapi/event_conversion.h
@@ -8,6 +8,7 @@
 #include <vector>
 
 #include "base/memory/linked_ptr.h"
+#include "ppapi/c/dev/ppb_gamepad_dev.h"
 #include "ppapi/c/ppb_input_event.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebInputEvent.h"
 
@@ -18,6 +19,7 @@ struct InputEventData;
 }
 
 namespace WebKit {
+class WebGamepads;
 class WebInputEvent;
 }
 
@@ -47,6 +49,11 @@ std::vector<linked_ptr<WebKit::WebInputEvent> > CreateSimulatedWebInputEvents(
 // type should not be "Undefined" since there's no corresponding PPAPI class.
 PP_InputEvent_Class ClassifyInputEvent(WebKit::WebInputEvent::Type type);
 
+// Translate from WebGamepads to the Gamepad API format
+// PP_GamepadsSampleData_Dev.
+void ConvertWebKitGamepadData(WebKit::WebGamepads& webkit_data,
+                              PP_GamepadsSampleData_Dev* output_data);
+
 }  // namespace ppapi
 }  // namespace webkit