Add VrShell feature flag and wire it up to VrShell delegate.

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 1584 matching lines @@
      IDS_FLAGS_MAC_VIEWS_NATIVE_DIALOGS_DESCRIPTION, kOsMac,
      FEATURE_VALUE_TYPE(chrome::kMacViewsNativeDialogs)},
     {"mac-views-webui-dialogs", IDS_FLAGS_MAC_VIEWS_WEBUI_DIALOGS_NAME,
      IDS_FLAGS_MAC_VIEWS_WEBUI_DIALOGS_DESCRIPTION, kOsMac,
      FEATURE_VALUE_TYPE(chrome::kMacViewsWebUIDialogs)},
 #endif  // OS_MACOSX
 #if defined(ENABLE_WEBVR)
     {"enable-webvr", IDS_FLAGS_WEBVR_NAME, IDS_FLAGS_WEBVR_DESCRIPTION, kOsAll,
      SINGLE_VALUE_TYPE(switches::kEnableWebVR)},
 #endif  // ENABLE_WEBVR
+#if defined(ENABLE_VR_SHELL)
+    {"enable-vr-shell", IDS_FLAGS_ENABLE_VR_SHELL_NAME,
+     IDS_FLAGS_ENABLE_VR_SHELL_DESCRIPTION, kOsAndroid,
+     FEATURE_VALUE_TYPE(features::kVrShell)},
+#endif  // ENABLE_VR_SHELL
 #if defined(OS_CHROMEOS)
     {"disable-accelerated-mjpeg-decode",
      IDS_FLAGS_ACCELERATED_MJPEG_DECODE_NAME,
      IDS_FLAGS_ACCELERATED_MJPEG_DECODE_DESCRIPTION, kOsCrOS,
      SINGLE_DISABLE_VALUE_TYPE(switches::kDisableAcceleratedMjpegDecode)},
 #endif  // OS_CHROMEOS
     {"v8-cache-options", IDS_FLAGS_V8_CACHE_OPTIONS_NAME,
      IDS_FLAGS_V8_CACHE_OPTIONS_DESCRIPTION, kOsAll,
      MULTI_VALUE_TYPE(kV8CacheOptionsChoices)},
     {"v8-cache-strategies-for-cache-storage",
@@ skipping 348 matching lines @@
      IDS_FLAGS_OPTIMIZE_LOADING_IPC_FOR_SMALL_RESOURCES_NAME,
      IDS_FLAGS_OPTIMIZE_LOADING_IPC_FOR_SMALL_RESOURCES_DESCRIPTION, kOsAll,
      FEATURE_VALUE_TYPE(features::kOptimizeLoadingIPCForSmallResources)},
     {"enable-font-cache-scaling", IDS_FLAGS_FONT_CACHE_SCALING_NAME,
      IDS_FLAGS_FONT_CACHE_SCALING_DESCRIPTION, kOsAll,
      FEATURE_VALUE_TYPE(features::kFontCacheScaling)},
     {"enable-framebusting-needs-sameorigin-or-usergesture",
      IDS_FLAGS_FRAMEBUSTING_NAME, IDS_FLAGS_FRAMEBUSTING_DESCRIPTION, kOsAll,
      FEATURE_VALUE_TYPE(features::kFramebustingNeedsSameOriginOrUserGesture)},
 #if defined(OS_ANDROID)
-    {"enable-vr-shell", IDS_FLAGS_ENABLE_VR_SHELL_NAME,
-     IDS_FLAGS_ENABLE_VR_SHELL_DESCRIPTION, kOsAndroid,
-     ENABLE_DISABLE_VALUE_TYPE(switches::kEnableVrShell,
-                               switches::kDisableVrShell)},
     {"enable-android-pay-integration-v1",
      IDS_FLAGS_ENABLE_ANDROID_PAY_INTEGRATION_V1_NAME,
      IDS_FLAGS_ENABLE_ANDROID_PAY_INTEGRATION_V1_DESCRIPTION, kOsAndroid,
      FEATURE_VALUE_TYPE(chrome::android::kAndroidPayIntegrationV1)},
 #endif  // OS_ANDROID
 #if defined(OS_CHROMEOS)
     {"disable-eol-notification", IDS_FLAGS_EOL_NOTIFICATION_NAME,
      IDS_FLAGS_EOL_NOTIFICATION_DESCRIPTION, kOsCrOS,
      SINGLE_DISABLE_VALUE_TYPE(chromeos::switches::kDisableEolNotification)},
 #endif  // OS_CHROMEOS
@@ skipping 285 matching lines @@
 const base::HistogramBase::Sample kBadSwitchFormatHistogramId = 0;
 
 const FeatureEntry* GetFeatureEntries(size_t* count) {
   *count = arraysize(kFeatureEntries);
   return kFeatureEntries;
 }
 
 }  // namespace testing
 
 }  // namespace about_flags