Remove unused fullscreen exit bubble class.

chrome/browser/ui/cocoa/fullscreen_exit_bubble_view.h

Index: chrome/browser/ui/cocoa/fullscreen_exit_bubble_view.h
diff --git a/chrome/browser/ui/cocoa/fullscreen_exit_bubble_view.h b/chrome/browser/ui/cocoa/fullscreen_exit_bubble_view.h
deleted file mode 100644
index d389dcb6e02bb2d669a5d85ea764ab18601af1cc..0000000000000000000000000000000000000000
--- a/chrome/browser/ui/cocoa/fullscreen_exit_bubble_view.h
+++ /dev/null
@@ -1,22 +0,0 @@
-// 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_FULLSCREEN_EXIT_BUBBLE_VIEW_H_
-#define CHROME_BROWSER_UI_COCOA_FULLSCREEN_EXIT_BUBBLE_VIEW_H_
-#pragma once
-
-#import <Cocoa/Cocoa.h>
-
-#include "chrome/browser/ui/cocoa/background_gradient_view.h"
-
-// A view that handles painting the background for the Fullscreen Exit Bubble.
-@interface FullscreenExitBubbleView : BackgroundGradientView
-
-// Specifies that mouse events over this view should be ignored by the
-// render host.
-- (BOOL)nonWebContentView;
-
-@end
-
-#endif  // CHROME_BROWSER_UI_COCOA_FULLSCREEN_EXIT_BUBBLE_VIEW_H_