Delete some unused code found by the clang static analyzer.

chrome/browser/ui/cocoa/browser_window_controller.h

 // Copyright (c) 2011 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 CHROME_BROWSER_UI_COCOA_BROWSER_WINDOW_CONTROLLER_H_
 #define CHROME_BROWSER_UI_COCOA_BROWSER_WINDOW_CONTROLLER_H_
 #pragma once
 
 // A class acting as the Objective-C controller for the Browser
 // object. Handles interactions between Cocoa and the cross-platform
@@ skipping 81 matching lines @@
   // away from the bottom/top or resized (or zoomed).
   CGFloat windowTopGrowth_;
   CGFloat windowBottomGrowth_;
 
   // YES only if we're shrinking the window from an apparent zoomed state (which
   // we'll only do if we grew it to the zoomed state); needed since we'll then
   // restrict the amount of shrinking by the amounts specified above. Reset to
   // NO on growth.
   BOOL isShrinkingFromZoomed_;
 
-  // Touch event data for two-finger gestures. Only available on Lion or higher
-  // with two-finger gestures enabled in the Trackpad preferences. This will
-  // contain the NSTouch objects from |-beginGestureWithEvent:| keyed by the
-  // touch's |identity|.
-  scoped_nsobject<NSMutableDictionary> twoFingerGestureTouches_;
-
   // The raw accumulated zoom value and the actual zoom increments made for an
   // an in-progress pinch gesture.
   CGFloat totalMagnifyGestureAmount_;
   NSInteger currentZoomStepDelta_;
 
   // The view controller that manages the incognito badge or the multi-profile
   // avatar icon. The view is always in the view hierarchy, but will be hidden
   // unless it's appropriate to show it.
   scoped_nsobject<AvatarButtonController> avatarButtonController_;
 
@@ skipping 331 matching lines @@
 - (void)resetWindowGrowthState;
 
 // Computes by how far in each direction, horizontal and vertical, the
 // |source| rect doesn't fit into |target|.
 - (NSSize)overflowFrom:(NSRect)source
                     to:(NSRect)target;
 @end  // @interface BrowserWindowController (TestingAPI)
 
 
 #endif  // CHROME_BROWSER_UI_COCOA_BROWSER_WINDOW_CONTROLLER_H_