Delegate root layer scroll offset to android_webview.

content/renderer/gpu/input_handler_manager_client.h

Index: content/renderer/gpu/input_handler_manager_client.h
diff --git a/content/renderer/gpu/input_handler_manager_client.h b/content/renderer/gpu/input_handler_manager_client.h
index 813a7198e1c88c10643a61b15935132a1dc4ee94..b06dc0022074ea69036ae845601cea8611a3747a 100644
--- a/content/renderer/gpu/input_handler_manager_client.h
+++ b/content/renderer/gpu/input_handler_manager_client.h
@@ -7,6 +7,11 @@
 
 #include "base/basictypes.h"
 #include "base/callback_forward.h"
+#include "base/memory/weak_ptr.h"
+
+namespace cc {
+class InputHandler;
+}
 
 namespace WebKit {
 class WebInputEvent;
@@ -28,7 +33,9 @@ class InputHandlerManagerClient {
   virtual void SetBoundHandler(const Handler& handler) = 0;
 
   // Called from the compositor thread.
-  virtual void DidAddInputHandler(int routing_id) = 0;
+  virtual void DidAddInputHandler(
+      int routing_id,
+      base::WeakPtr<cc::InputHandler> input_handler) = 0;
   virtual void DidRemoveInputHandler(int routing_id) = 0;
 
  protected: