[Mac] Implement form resubmission warning dialog

chrome/chrome.gyp

 # Copyright (c) 2009 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.
 
 {
   'variables': {
     'chromium_code': 1,
 
     'variables': {
       'version_py_path': 'tools/build/version.py',
@@ skipping 1159 matching lines @@
         'browser/cocoa/objc_method_swizzle.h',
         'browser/cocoa/objc_method_swizzle.mm',
         'browser/cocoa/page_info_window_controller.h',
         'browser/cocoa/page_info_window_controller.mm',
         'browser/cocoa/page_info_window_mac.h',
         'browser/cocoa/page_info_window_mac.mm',
         'browser/cocoa/preferences_window_controller.h',
         'browser/cocoa/preferences_window_controller.mm',
         'browser/cocoa/rwhvm_editcommand_helper.h',
         'browser/cocoa/rwhvm_editcommand_helper.mm',
+        'browser/cocoa/repost_form_warning_mac.h',
+        'browser/cocoa/repost_form_warning_mac.mm',
         'browser/cocoa/restart_browser.h',
         'browser/cocoa/restart_browser.mm',
         'browser/cocoa/sad_tab_view.h',
         'browser/cocoa/sad_tab_view.mm',
         'browser/cocoa/search_engine_list_model.h',
         'browser/cocoa/search_engine_list_model.mm',
         'browser/cocoa/shell_dialogs_mac.mm',
         'browser/cocoa/status_bubble_mac.h',
         'browser/cocoa/status_bubble_mac.mm',
         'browser/cocoa/tab_contents_controller.h',
@@ skipping 5772 matching lines @@
       ]
     }],
   ],  # 'conditions'
 }
 
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 # indent-tabs-mode:nil
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