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

media/base/media_switches.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 "build/build_config.h"
 #include "media/base/media_switches.h"
 #include "ppapi/features/features.h"
 
 namespace switches {
 
@@ skipping 188 matching lines @@
 // supported platforms. On platforms that do not support ECK, this feature has
 // no effect.
 const base::Feature kExternalClearKeyForTesting{
     "external-clear-key-for-testing", base::FEATURE_DISABLED_BY_DEFAULT};
 
 #if defined(OS_ANDROID)
 // Lock the screen orientation when a video goes fullscreen.
 const base::Feature kVideoFullscreenOrientationLock{
     "VideoFullscreenOrientationLock", base::FEATURE_ENABLED_BY_DEFAULT};
 
+// Enter/exit fullscreen when device is rotated to/from the video orientation.
+const base::Feature kVideoRotateToFullscreen{"VideoRotateToFullscreen",
+                                             base::FEATURE_DISABLED_BY_DEFAULT};
+
 // An experimental feature to enable persistent-license type support in MediaDrm
 // when using Encrypted Media Extensions (EME) API.
 // TODO(xhwang): Remove this after feature launch. See http://crbug.com/493521
 const base::Feature kMediaDrmPersistentLicense{
     "MediaDrmPersistentLicense", base::FEATURE_DISABLED_BY_DEFAULT};
 
 #endif
 
 }  // namespace media