[Autofill] Add Mac implementation for the in-browser process popup view.

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 <algorithm>
 #include <iterator>
 #include <map>
 #include <set>
@@ skipping 1107 matching lines @@
     "performance-monitor-gathering",
     IDS_FLAGS_PERFORMANCE_MONITOR_GATHERING_NAME,
     IDS_FLAGS_PERFORMANCE_MONITOR_GATHERING_DESCRIPTION,
     kOsAll,
     SINGLE_VALUE_TYPE(switches::kPerformanceMonitorGathering)
   },
   {
     "enable-new-autofill-ui",
     IDS_FLAGS_ENABLE_NEW_AUTOFILL_UI_NAME,
     IDS_FLAGS_ENABLE_NEW_AUTOFILL_UI_DESCRIPTION,
-    kOsWin | kOsLinux,
+    kOsMac | kOsWin | kOsLinux | kOsCrOS,
     SINGLE_VALUE_TYPE(switches::kEnableNewAutofillUi)
   },
   {
     "enable-new-autofill-heuristics",
     IDS_FLAGS_ENABLE_NEW_AUTOFILL_HEURISTICS_NAME,
     IDS_FLAGS_ENABLE_NEW_AUTOFILL_HEURISTICS_DESCRIPTION,
     kOsAll,
     SINGLE_VALUE_TYPE(switches::kEnableNewAutofillHeuristics)
   },
   {
@@ skipping 491 matching lines @@
 }
 
 const Experiment* GetExperiments(size_t* count) {
   *count = num_experiments;
   return experiments;
 }
 
 }  // namespace testing
 
 }  // namespace about_flags