Implement Wheel Gesture Scrolling on OSX.

content/public/test/browser_test_utils.cc

 // Copyright (c) 2012 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/public/test/browser_test_utils.h"
 
 #include <stddef.h>
 #include <utility>
 
 #include "base/auto_reset.h"
@@ skipping 1049 matching lines @@
   return false;
 }
 
 bool RequestFrame(WebContents* web_contents) {
   DCHECK(web_contents);
   return RenderWidgetHostImpl::From(
              web_contents->GetRenderViewHost()->GetWidget())
       ->ScheduleComposite();
 }
 
-FrameWatcher::FrameWatcher()
-    : BrowserMessageFilter(ViewMsgStart), frames_to_wait_(0) {
-}
+FrameWatcher::FrameWatcher() : MessageFilter(), frames_to_wait_(0) {}
 
 FrameWatcher::~FrameWatcher() {
 }
 
 void FrameWatcher::ReceivedFrameSwap(cc::CompositorFrameMetadata metadata) {
   --frames_to_wait_;
   last_metadata_ = metadata;
   if (frames_to_wait_ == 0)
     quit_.Run();
 }
@@ skipping 10 matching lines @@
         BrowserThread::UI, FROM_HERE,
         base::Bind(&FrameWatcher::ReceivedFrameSwap, this, frame->metadata));
   }
   return false;
 }
 
 void FrameWatcher::AttachTo(WebContents* web_contents) {
   DCHECK(web_contents);
   RenderWidgetHostImpl* widget_host = RenderWidgetHostImpl::From(
       web_contents->GetRenderViewHost()->GetWidget());
-  widget_host->GetProcess()->AddFilter(this);
+  widget_host->GetProcess()->GetChannel()->AddFilter(this);
 }
 
 void FrameWatcher::WaitFrames(int frames_to_wait) {
   if (frames_to_wait <= 0)
     return;
   base::RunLoop run_loop;
   base::AutoReset<base::Closure> reset_quit(&quit_, run_loop.QuitClosure());
   base::AutoReset<int> reset_frames_to_wait(&frames_to_wait_, frames_to_wait);
   run_loop.Run();
 }
@@ skipping 77 matching lines @@
   DCHECK_CURRENTLY_ON(BrowserThread::UI);
   if (ack_result_ != INPUT_EVENT_ACK_STATE_UNKNOWN)
     return ack_result_;
   base::RunLoop run_loop;
   base::AutoReset<base::Closure> reset_quit(&quit_, run_loop.QuitClosure());
   run_loop.Run();
   return ack_result_;
 }
 
 }  // namespace content