Add kOsMac to the enable-save-password-bubble platforms.

chrome/browser/about_flags.cc

 // 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 "chrome/browser/about_flags.h"
 
 #include <iterator>
 #include <map>
 #include <set>
 #include <utility>
@@ skipping 1738 matching lines @@
     IDS_FLAGS_ENABLE_INSTANT_SEARCH_CLICKS_NAME,
     IDS_FLAGS_ENABLE_INSTANT_SEARCH_CLICKS_DESCRIPTION,
     kOsAndroid,
     SINGLE_VALUE_TYPE(switches::kEnableInstantSearchClicks)
   },
 #endif
   {
     "enable-save-password-bubble",
     IDS_FLAGS_ENABLE_SAVE_PASSWORD_BUBBLE_NAME,
     IDS_FLAGS_ENABLE_SAVE_PASSWORD_BUBBLE_DESCRIPTION,
-    kOsWin | kOsLinux | kOsCrOS,
+    kOsWin | kOsLinux | kOsCrOS | kOsMac,
     ENABLE_DISABLE_VALUE_TYPE(switches::kEnableSavePasswordBubble,
                               switches::kDisableSavePasswordBubble)
   },
 #if defined(OS_CHROMEOS)
   {
     "enable-filemanager-mtp",
     IDS_FLAGS_ENABLE_FILE_MANAGER_MTP_NAME,
     IDS_FLAGS_ENABLE_FILE_MANAGER_MTP_DESCRIPTION,
     kOsCrOS,
     MULTI_VALUE_TYPE(kEnableFileManagerMTPChoices)
@@ skipping 721 matching lines @@
 }
 
 const Experiment* GetExperiments(size_t* count) {
   *count = num_experiments;
   return experiments;
 }
 
 }  // namespace testing
 
 }  // namespace about_flags