Adding an experimental flag to block autoplay with sound in cross-origin iframes

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 557f7348a2382e8dfe8534d423cbcd42a1a54578..2de2293fbb2abaf2f0544207277675f5a9bf0e93 100644
--- a/chrome/browser/about_flags.cc
+++ b/chrome/browser/about_flags.cc
@@ -1121,6 +1121,14 @@ const FeatureEntry kFeatureEntries[] = {
      IDS_FLAGS_GESTURE_REQUIREMENT_FOR_MEDIA_PLAYBACK_DESCRIPTION, kOsAll,
      SINGLE_DISABLE_VALUE_TYPE(
          switches::kDisableGestureRequirementForMediaPlayback)},
+#if !defined(OS_ANDROID)
+    {"gesture-requirement-for-cross-origin-media-playback",

[mlamouri (slow - plz ping), 2016/11/18 14:33:10]

You use "cross-origin-media-playback-requires-user-gesture" for the name in the
code. What about the same name for the flag? :)

[Zhiqiang Zhang (Slow), 2016/11/21 18:06:23]

Done.

+     IDS_FLAGS_CROSS_ORIGIN_MEDIA_PLAYBACK_REQUIRES_USER_GESTURE_NAME,
+     IDS_FLAGS_CROSS_ORIGIN_MEDIA_PLAYBACK_REQUIRES_USER_GESTURE_DESCRIPTION,
+     kOsDesktop, FEATURE_VALUE_TYPE(
+                     features::kCrossOriginMediaPlaybackRequiresUserGesture)},
+#endif  // !defined(OS_ANDROID)
+
 #if defined(OS_CHROMEOS)
     {"enable-virtual-keyboard", IDS_FLAGS_VIRTUAL_KEYBOARD_NAME,
      IDS_FLAGS_VIRTUAL_KEYBOARD_DESCRIPTION, kOsCrOS,