Use DidOverscrollParams in the browser

content/common/view_messages.h

Index: content/common/view_messages.h
diff --git a/content/common/view_messages.h b/content/common/view_messages.h
index b4186820b6164ffa84e53f6e2c0f9ff006f90f66..549e79bfa4b50d9445e00a44f3431637586ef55d 100644
--- a/content/common/view_messages.h
+++ b/content/common/view_messages.h
@@ -14,6 +14,7 @@
 #include "content/common/content_export.h"
 #include "content/common/content_param_traits.h"
 #include "content/common/cookie_data.h"
+#include "content/common/input/did_overscroll_params.h"
 #include "content/common/navigation_gesture.h"
 #include "content/common/pepper_renderer_instance_data.h"
 #include "content/common/view_message_enums.h"
@@ -151,6 +152,12 @@ IPC_STRUCT_TRAITS_BEGIN(content::DateTimeSuggestion)
   IPC_STRUCT_TRAITS_MEMBER(label)
 IPC_STRUCT_TRAITS_END()
 
+IPC_STRUCT_TRAITS_BEGIN(content::DidOverscrollParams)
+  IPC_STRUCT_TRAITS_MEMBER(accumulated_overscroll)
+  IPC_STRUCT_TRAITS_MEMBER(latest_overscroll_delta)
+  IPC_STRUCT_TRAITS_MEMBER(current_fling_velocity)
+IPC_STRUCT_TRAITS_END()
+
 IPC_STRUCT_TRAITS_BEGIN(content::FaviconURL)
   IPC_STRUCT_TRAITS_MEMBER(icon_url)
   IPC_STRUCT_TRAITS_MEMBER(icon_type)
@@ -1566,9 +1573,8 @@ IPC_MESSAGE_ROUTED2(ViewHostMsg_SwapCompositorFrame,
 
 // Sent by the compositor when input scroll events are dropped due to bounds
 // restricions on the root scroll offset.
-IPC_MESSAGE_ROUTED2(ViewHostMsg_DidOverscroll,
-                    gfx::Vector2dF /* accumulated_overscroll */,
-                    gfx::Vector2dF /* current_fling_velocity */)
+IPC_MESSAGE_ROUTED1(ViewHostMsg_DidOverscroll,
+                    content::DidOverscrollParams /* params */)
 
 // Sent by the compositor when a flinging animation is stopped.
 IPC_MESSAGE_ROUTED0(ViewHostMsg_DidStopFlinging)