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

chrome/browser/about_flags.cc

Index: chrome/browser/about_flags.cc
diff --git a/chrome/browser/about_flags.cc b/chrome/browser/about_flags.cc
index 57bc002e44f2428a5b21469207bd459ce4ce0bcc..9696e43efeab7d18e9a9f7904374f2b3b751d1e2 100644
--- a/chrome/browser/about_flags.cc
+++ b/chrome/browser/about_flags.cc
@@ -2511,6 +2511,10 @@ const FeatureEntry kFeatureEntries[] = {
      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,