Add mirrored screen option

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 1035 matching lines @@
     IDS_FLAGS_ENABLE_TOUCH_FEEDBACK_DESCRIPTION,
     kOsCrOS,
     SINGLE_VALUE_TYPE(switches::kEnableTouchFeedback),
   },
   { "ash-disable-text-filtering-in-overview-mode",
     IDS_FLAGS_ASH_DISABLE_TEXT_FILTERING_IN_OVERVIEW_MODE_NAME,
     IDS_FLAGS_ASH_DISABLE_TEXT_FILTERING_IN_OVERVIEW_MODE_DESCRIPTION,
     kOsCrOS,
     SINGLE_VALUE_TYPE(ash::switches::kAshDisableTextFilteringInOverviewMode),
   },
+  { "ash-enable-mirrored-screen",
+    IDS_FLAGS_ASH_ENABLE_MIRRORED_SCREEN_NAME,
+    IDS_FLAGS_ASH_ENABLE_MIRRORED_SCREEN_DESCRIPTION,
+    kOsCrOS,
+    SINGLE_VALUE_TYPE(ash::switches::kAshEnableMirroredScreen),
+  },
 #endif  // defined(USE_ASH)
 #if defined(OS_CHROMEOS)
   {
     "enable-carrier-switching",
     IDS_FLAGS_ENABLE_CARRIER_SWITCHING,
     IDS_FLAGS_ENABLE_CARRIER_SWITCHING_DESCRIPTION,
     kOsCrOS,
     SINGLE_VALUE_TYPE(chromeos::switches::kEnableCarrierSwitching)
   },
   {
@@ skipping 1569 matching lines @@
 }
 
 const Experiment* GetExperiments(size_t* count) {
   *count = num_experiments;
   return experiments;
 }
 
 }  // namespace testing
 
 }  // namespace about_flags