Seperate horizontal and vertical overscrolling

content/browser/web_contents/aura/window_slider.h

 // Copyright (c) 2013 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.
 
 #ifndef CONTENT_BROWSER_WEB_CONTENTS_AURA_WINDOW_SLIDER_H_
 #define CONTENT_BROWSER_WEB_CONTENTS_AURA_WINDOW_SLIDER_H_
 
 #include "base/compiler_specific.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
@@ skipping 102 matching lines @@
   float delta_x_;
 
   // This keeps track of the layer created by the delegate.
   scoped_ptr<ui::Layer> slider_;
 
   // This manages the shadow for the layers.
   scoped_ptr<ShadowLayerDelegate> shadow_;
 
   base::WeakPtrFactory<WindowSlider> weak_factory_;
 
-  const float min_start_threshold_;
+  const float horiz_start_threshold_;
   const float complete_threshold_;
 
   DISALLOW_COPY_AND_ASSIGN(WindowSlider);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_WEB_CONTENTS_AURA_WINDOW_SLIDER_H_