Implement pepper flash fullscreen on Mac

content/browser/renderer_host/accelerated_plugin_view_mac_unittest.mm

 // 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.
 
 #include "content/browser/renderer_host/accelerated_plugin_view_mac.h"
 
 #include "base/logging.h"
-#import "content/public/browser/accelerated_window_interface.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "testing/platform_test.h"
+#import "ui/base/cocoa/underlay_opengl_hosting_window.h"
 
 @interface UnderlayCountingWindow : NSWindow<UnderlayableSurface> {
  @private
   int underlayCount_;
 }
 @property (readonly, nonatomic) int underlayCount;
 - (void)underlaySurfaceAdded;
 - (void)underlaySurfaceRemoved;
 @end
 
@@ skipping 159 matching lines @@
 
   [[window contentView] addSubview:parent];
   EXPECT_EQ(1, [window underlayCount]);
 
   [parent setHidden:YES];
   EXPECT_EQ(0, [window underlayCount]);
 
   [parent removeFromSuperview];
   EXPECT_EQ(0, [window underlayCount]);
 }