[Media controls] Add rotate-to-fullscreen gesture behind flag

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 2479 matching lines @@
      FEATURE_VALUE_TYPE(features::kMediaRemoting)},
     {"media-remoting-encrypted", flag_descriptions::kMediaRemotingEncryptedName,
      flag_descriptions::kMediaRemotingEncryptedDescription, kOsDesktop,
      FEATURE_VALUE_TYPE(features::kMediaRemotingEncrypted)},
 #endif
 #if defined(OS_ANDROID)
     {"video-fullscreen-orientation-lock",
      flag_descriptions::kVideoFullscreenOrientationLockName,
      flag_descriptions::kVideoFullscreenOrientationLockDescription, kOsAndroid,
      FEATURE_VALUE_TYPE(media::kVideoFullscreenOrientationLock)},
+    {"video-rotate-to-fullscreen",
+     flag_descriptions::kVideoRotateToFullscreenName,
+     flag_descriptions::kVideoRotateToFullscreenDescription, kOsAndroid,
+     FEATURE_VALUE_TYPE(media::kVideoRotateToFullscreen)},
 #endif
     {"enable-nostate-prefetch", flag_descriptions::kNostatePrefetch,
      flag_descriptions::kNostatePrefetchDescription, kOsAll,
      FEATURE_WITH_PARAMS_VALUE_TYPE(prerender::kNoStatePrefetchFeature,
                                     kNoStatePrefetchFeatureVariations,
                                     "NoStatePrefetchValidation")},
 #if defined(OS_CHROMEOS)
     {"cros-comp-updates", flag_descriptions::kCrosCompUpdatesName,
      flag_descriptions::kCrosCompUpdatesDescription, kOsCrOS,
      FEATURE_VALUE_TYPE(features::kCrosCompUpdates)},
@@ skipping 429 matching lines @@
 const base::HistogramBase::Sample kBadSwitchFormatHistogramId = 0;
 
 const FeatureEntry* GetFeatureEntries(size_t* count) {
   *count = arraysize(kFeatureEntries);
   return kFeatureEntries;
 }
 
 }  // namespace testing
 
 }  // namespace about_flags