Respect the order of input messages from browser to renderer

content/renderer/input/input_handler_manager_client.h

Index: content/renderer/input/input_handler_manager_client.h
diff --git a/content/renderer/input/input_handler_manager_client.h b/content/renderer/input/input_handler_manager_client.h
index e0dcb19aabe1c27251a0ad96584757ac2077ab38..5518442247c24c49fdc57cd295362e89927cf037 100644
--- a/content/renderer/input/input_handler_manager_client.h
+++ b/content/renderer/input/input_handler_manager_client.h
@@ -44,8 +44,8 @@ class CONTENT_EXPORT InputHandlerManagerClient {
   virtual void SetBoundHandler(const Handler& handler) = 0;
 
   // Called from the compositor thread.
-  virtual void DidAddInputHandler(int routing_id) = 0;
-  virtual void DidRemoveInputHandler(int routing_id) = 0;
+  virtual void RegisterRoutingID(int routing_id) = 0;
+  virtual void UnregisterRoutingID(int routing_id) = 0;
   virtual void DidOverscroll(int routing_id,
                              const DidOverscrollParams& params) = 0;
   virtual void DidStartFlinging(int routing_id) = 0;