Plumb phase/momentum for WheelEvent.

content/public/browser/render_widget_host_view_mac_delegate.h

 // 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.
 
 #ifndef CONTENT_PUBLIC_BROWSER_RENDER_WIDGET_HOST_VIEW_MAC_DELEGATE_H_
 #define CONTENT_PUBLIC_BROWSER_RENDER_WIDGET_HOST_VIEW_MAC_DELEGATE_H_
 
 #import <Cocoa/Cocoa.h>
 
 namespace blink {
@@ skipping 33 matching lines @@
 - (void)endGestureWithEvent:(NSEvent*)event;
 
 // This is a low level API which provides touches associated with an event.
 // It is used in conjunction with gestures to determine finger placement
 // on the trackpad.
 - (void)touchesMovedWithEvent:(NSEvent*)event;
 - (void)touchesBeganWithEvent:(NSEvent*)event;
 - (void)touchesCancelledWithEvent:(NSEvent*)event;
 - (void)touchesEndedWithEvent:(NSEvent*)event;
 
-// These methods control whether a given view is allowed to rubberband in the
-// given direction. This is inversely related to whether the view is allowed to
-// 2-finger history swipe in the given direction.
-- (BOOL)canRubberbandLeft:(NSView*)view;
-- (BOOL)canRubberbandRight:(NSView*)view;
-
 // The browser process received an ACK from the renderer after it processed
 // |event|.
 - (void)rendererHandledWheelEvent:(const blink::WebMouseWheelEvent&)event
                          consumed:(BOOL)consumed;
 - (void)rendererHandledGestureScrollEvent:(const blink::WebGestureEvent&)event
                                  consumed:(BOOL)consumed;
 @end
 
 #endif  // CONTENT_PUBLIC_BROWSER_RENDER_WIDGET_HOST_VIEW_MAC_DELEGATE_H_