If no locale data files can be found, show a dialog and exit

chrome/browser/browser_main_mac.mm

 // 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.
 
 #include "chrome/browser/browser_main_posix.h"
 
 #import <Cocoa/Cocoa.h>
 
 #include "base/command_line.h"
 #include "base/debug/debugger.h"
@@ skipping 27 matching lines @@
 }
 
 void RecordBrowserStartupTime() {
   // Not implemented on Mac for now.
 }
 
 void WarnAboutMinimumSystemRequirements() {
   // Nothing to check for on Mac right now.
 }
 
+void ShowMissingLocaleMessageBox() {
+  // Not called on Mac because we load the locale files differently.
+}
+
 // From browser_main_win.h, stubs until we figure out the right thing...
 
 int DoUninstallTasks(bool chrome_still_running) {
   return content::RESULT_CODE_NORMAL_EXIT;
 }
 
 int HandleIconsCommands(const CommandLine& parsed_command_line) {
   return 0;
 }
 
@@ skipping 86 matching lines @@
       crypto::EnsureNSPRInit();
     }
   }
 };
 
 // static
 BrowserMainParts* BrowserMainParts::CreateBrowserMainParts(
     const MainFunctionParams& parameters) {
   return new BrowserMainPartsMac(parameters);
 }