Add movement information to PPB_MouseInputEvent.

ppapi/native_client/src/shared/ppapi_proxy/input_event_data.h

Index: ppapi/native_client/src/shared/ppapi_proxy/input_event_data.h
diff --git a/ppapi/native_client/src/shared/ppapi_proxy/input_event_data.h b/ppapi/native_client/src/shared/ppapi_proxy/input_event_data.h
index 325d3d6ea2f611aa6dc08bc6ccd017161b186a00..b92057fd9deb1dacd5a6b277c34d8c29debbd2ff 100644
--- a/ppapi/native_client/src/shared/ppapi_proxy/input_event_data.h
+++ b/ppapi/native_client/src/shared/ppapi_proxy/input_event_data.h
@@ -25,6 +25,7 @@ struct InputEventData {
   PP_InputEvent_MouseButton mouse_button;
   int32_t mouse_click_count;
   PP_Point mouse_position;
+  PP_Point mouse_movement;
 
   PP_FloatPoint wheel_delta;
   PP_FloatPoint wheel_ticks;
@@ -38,7 +39,7 @@ struct InputEventData {
 // and alignment. TODO(dmichael): This is only required because we don't pickle
 // the type. As a short-cut, we memcpy it instead. It would be cleaner to
 // pickle this struct.
-PP_COMPILE_ASSERT_SIZE_IN_BYTES(InputEventData, 56);
+PP_COMPILE_ASSERT_SIZE_IN_BYTES(InputEventData, 64);
 
 }  // namespace ppapi_proxy