Make the shadow for the fullscreen exit bubble for mac more prominent.

chrome/chrome_browser.gypi

 # 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.
 
 {
   'targets': [
     {
       'target_name': 'browser',
       'type': 'static_library',
       'dependencies': [
@@ skipping 2623 matching lines @@
         'browser/ui/cocoa/first_run_dialog.h',
         'browser/ui/cocoa/first_run_dialog.mm',
         'browser/ui/cocoa/floating_bar_backing_view.h',
         'browser/ui/cocoa/floating_bar_backing_view.mm',
         'browser/ui/cocoa/focus_tracker.h',
         'browser/ui/cocoa/focus_tracker.mm',
         'browser/ui/cocoa/framed_browser_window.h',
         'browser/ui/cocoa/framed_browser_window.mm',
         'browser/ui/cocoa/fullscreen_exit_bubble_controller.h',
         'browser/ui/cocoa/fullscreen_exit_bubble_controller.mm',
+        'browser/ui/cocoa/fullscreen_exit_bubble_view.h',
+        'browser/ui/cocoa/fullscreen_exit_bubble_view.mm',
         'browser/ui/cocoa/fullscreen_window.h',
         'browser/ui/cocoa/fullscreen_window.mm',
         'browser/ui/cocoa/global_error_bubble_controller.h',
         'browser/ui/cocoa/global_error_bubble_controller.mm',
         'browser/ui/cocoa/gradient_button_cell.h',
         'browser/ui/cocoa/gradient_button_cell.mm',
         'browser/ui/cocoa/history_menu_bridge.h',
         'browser/ui/cocoa/history_menu_bridge.mm',
         'browser/ui/cocoa/history_menu_cocoa_controller.h',
         'browser/ui/cocoa/history_menu_cocoa_controller.mm',
@@ skipping 2582 matching lines @@
       'type': 'static_library',
       'sources': [ 'browser/history/in_memory_url_index_cache.proto' ],
       'variables': {
         'proto_in_dir': 'browser/history',
         'proto_out_dir': 'chrome/browser/history',
       },
       'includes': [ '../build/protoc.gypi' ]
     },
   ],
 }