Implement Wheel Gesture Scrolling on OSX.

content/browser/renderer_host/input/touch_action_browsertest.cc

 // Copyright 2014 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 <utility>
 
 #include "base/auto_reset.h"
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/macros.h"
@@ skipping 76 matching lines @@
     runner_->Quit();
   }
 
  protected:
   void LoadURL() {
     const GURL data_url(kTouchActionDataURL);
     NavigateToURL(shell(), data_url);
 
     RenderWidgetHostImpl* host = GetWidgetHost();
     scoped_refptr<FrameWatcher> frame_watcher(new FrameWatcher());
-    host->GetProcess()->AddFilter(frame_watcher.get());
+    frame_watcher->AttachTo(shell()->web_contents());
     host->GetView()->SetSize(gfx::Size(400, 400));
 
     base::string16 ready_title(base::ASCIIToUTF16("ready"));
     TitleWatcher watcher(shell()->web_contents(), ready_title);
     ignore_result(watcher.WaitAndGetTitle());
 
     // We need to wait until at least one frame has been composited
     // otherwise the injection of the synthetic gestures may get
     // dropped because of MainThread/Impl thread sync of touch event
     // regions.
@@ skipping 99 matching lines @@
   bool scrolled = DoTouchScroll(gfx::Point(50, 150), gfx::Vector2d(0, 45));
   EXPECT_FALSE(scrolled);
 
   EXPECT_EQ(1, ExecuteScriptAndExtractInt("eventCounts.touchstart"));
   EXPECT_GE(ExecuteScriptAndExtractInt("eventCounts.touchmove"), 1);
   EXPECT_EQ(1, ExecuteScriptAndExtractInt("eventCounts.touchend"));
   EXPECT_EQ(0, ExecuteScriptAndExtractInt("eventCounts.touchcancel"));
 }
 
 }  // namespace content