Implemented fullscreen exit animation with AppKit

chrome/browser/ui/cocoa/full_size_content_window.h

 // 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.
 
 #ifndef CHROME_BROWSER_UI_COCOA_FULL_SIZE_CONTENT_WINDOW_H_
 #define CHROME_BROWSER_UI_COCOA_FULL_SIZE_CONTENT_WINDOW_H_
 
 #import "chrome/browser/ui/cocoa/chrome_event_processing_window.h"
 
 #include "base/mac/scoped_nsobject.h"
@@ skipping 17 matching lines @@
   base::scoped_nsobject<NSView> chromeWindowView_;
 }
 
 // Designated initializer.
 - (instancetype)initWithContentRect:(NSRect)contentRect
                           styleMask:(NSUInteger)windowStyle
                             backing:(NSBackingStoreType)bufferingType
                               defer:(BOOL)deferCreation
              wantsViewsOverTitlebar:(BOOL)wantsViewsOverTitlebar;
 
+// Forces the contentView to resize to the given size. This need to be forced
+// because by default, the contentView will always have the same size as the
+// window.
+- (void)forceContentViewSize:(NSSize)size;
+
 @end
 
 #endif  // CHROME_BROWSER_UI_COCOA_FULL_SIZE_CONTENT_WINDOW_H_