Ensure acks are sent for all blocking events.

content/renderer/mus/compositor_mus_connection_unittest.cc

Index: content/renderer/mus/compositor_mus_connection_unittest.cc
diff --git a/content/renderer/mus/compositor_mus_connection_unittest.cc b/content/renderer/mus/compositor_mus_connection_unittest.cc
index 74ca40d36974ad5046bf4f869ec3d1b25f41d0c5..441674ce4b6a94ede77ba0d6ac7c4d19862ae612 100644
--- a/content/renderer/mus/compositor_mus_connection_unittest.cc
+++ b/content/renderer/mus/compositor_mus_connection_unittest.cc
@@ -129,8 +129,10 @@ class TestInputHandlerManagerClient
                      const content::DidOverscrollParams& params) override {}
   void DidStartFlinging(int routing_id) override {}
   void DidStopFlinging(int routing_id) override {}
-  void NotifyInputEventHandled(int routing_id,
-                               blink::WebInputEvent::Type type) override {}
+  void NotifyInputEventHandled(
+      int routing_id,
+      blink::WebInputEvent::Type type,
+      content::InputEventAckState ack_result) override {}
 
  private:
   DISALLOW_COPY_AND_ASSIGN(TestInputHandlerManagerClient);