sync compositor: Merge input path with chrome

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 c794bd2353a32989095bb5f177e26e49951c0b3f..dc3d98de26ec0a9f0c4bd3fe92f40cfb244d9f22 100644
--- a/content/renderer/input/input_handler_manager_client.h
+++ b/content/renderer/input/input_handler_manager_client.h
@@ -44,9 +44,7 @@ class CONTENT_EXPORT InputHandlerManagerClient {
   virtual void SetBoundHandler(const Handler& handler) = 0;
 
   // Called from the compositor thread.
-  virtual void DidAddInputHandler(
-      int routing_id,
-      ui::SynchronousInputHandlerProxy* synchronous_handler) = 0;
+  virtual void DidAddInputHandler(int routing_id) = 0;
   virtual void DidRemoveInputHandler(int routing_id) = 0;
   virtual void DidOverscroll(int routing_id,
                              const DidOverscrollParams& params) = 0;
@@ -62,6 +60,22 @@ class CONTENT_EXPORT InputHandlerManagerClient {
   DISALLOW_COPY_AND_ASSIGN(InputHandlerManagerClient);
 };
 
+class CONTENT_EXPORT InputHandlerManagerSyncHandlerProxyClient {

[tdresser, 2016/02/29 16:42:49]

This name is hard to parse.

Isn't the second "Handler" redundant?
Would something like:

SyncInputHandlerManagerProxyClient 

mean the same thing?

[boliu, 2016/02/29 18:58:53]

Yeah I'm terribe with names. How about just SynchronousInputHandlerProxyClient?
To match SynchronousInputHandlerProxy

[tdresser, 2016/02/29 19:10:25]

SGTM.

[boliu, 2016/02/29 21:04:40]

Done.

+ public:
+  virtual ~InputHandlerManagerSyncHandlerProxyClient() {}
+
+  virtual void DidAddSynchronousHandlerProxy(
+      int routing_id,
+      ui::SynchronousInputHandlerProxy* synchronous_handler) = 0;
+  virtual void DidRemoveSynchronousHandlerProxy(int routing_id) = 0;
+
+ protected:
+  InputHandlerManagerSyncHandlerProxyClient() {}
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(InputHandlerManagerSyncHandlerProxyClient);
+};
+
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_INPUT_INPUT_HANDLER_MANAGER_CLIENT_H_