Implement Wheel Gesture Scrolling on OSX.

content/renderer/mus/render_widget_mus_connection.cc

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/renderer/mus/render_widget_mus_connection.h"
 
 #include <map>
 
 #include "base/lazy_instance.h"
 #include "base/macros.h"
@@ skipping 88 matching lines @@
   return true;
 }
 
 void RenderWidgetMusConnection::ObserveWheelEventAndResult(
     const blink::WebMouseWheelEvent& wheel_event,
     const gfx::Vector2dF& wheel_unused_delta,
     bool event_processed) {
   NOTIMPLEMENTED();
 }
 
+void RenderWidgetMusConnection::ObserveGestureEventAndResult(
+    const blink::WebGestureEvent& gesture_event,
+    const gfx::Vector2dF& wheel_unused_delta,
+    bool event_processed) {
+  NOTIMPLEMENTED();
+}
+
 void RenderWidgetMusConnection::OnDidHandleKeyEvent() {
   NOTIMPLEMENTED();
 }
 
 void RenderWidgetMusConnection::OnDidOverscroll(
     const DidOverscrollParams& params) {
   NOTIMPLEMENTED();
 }
 
 void RenderWidgetMusConnection::OnInputEventAck(
@@ skipping 55 matching lines @@
   // previous event.
   // DCHECK(pending_ack_.is_null());
   pending_ack_ = ack;
   // TODO(fsamuel, sadrul): Track real latency info.
   ui::LatencyInfo latency_info;
   input_handler_->HandleInputEvent(*input_event, latency_info,
                                    DISPATCH_TYPE_NORMAL);
 }
 
 }  // namespace content