Add flag to enable immersive fullscreen for v2 apps

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 991 matching lines @@
     kOsCrOS,
     SINGLE_VALUE_TYPE(chromeos::switches::kEnableBackgroundLoader)
   },
   {
     "ash-enable-docked-windows",
     IDS_FLAGS_DOCKED_WINDOWS_NAME,
     IDS_FLAGS_DOCKED_WINDOWS_DESCRIPTION,
     kOsCrOS,
     SINGLE_VALUE_TYPE(ash::switches::kAshEnableDockedWindows)
   },
+  {
+    "ash-enable-app-immersive-fullscreen",
+    IDS_FLAGS_APP_IMMERSIVE_FULLSCREEN_NAME,
+    IDS_FLAGS_APP_IMMERSIVE_FULLSCREEN_DESCRIPTION,
+    kOsCrOS,
+    SINGLE_VALUE_TYPE(ash::switches::kAshEnableAppImmersiveFullscreen)
+  },
 #endif
   {
     "enable-download-resumption",
     IDS_FLAGS_ENABLE_DOWNLOAD_RESUMPTION_NAME,
     IDS_FLAGS_ENABLE_DOWNLOAD_RESUMPTION_DESCRIPTION,
     kOsDesktop,
     SINGLE_VALUE_TYPE(switches::kEnableDownloadResumption)
   },
   {
     "allow-nacl-socket-api",
@@ skipping 1324 matching lines @@
 }
 
 const Experiment* GetExperiments(size_t* count) {
   *count = num_experiments;
   return experiments;
 }
 
 }  // namespace testing
 
 }  // namespace about_flags