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

third_party/WebKit/Source/web/WebSettingsImpl.cpp

Index: third_party/WebKit/Source/web/WebSettingsImpl.cpp
diff --git a/third_party/WebKit/Source/web/WebSettingsImpl.cpp b/third_party/WebKit/Source/web/WebSettingsImpl.cpp
index 65d5d91f138baee4338e6f1e54bd639da4e0abc7..5b706d9597e8d818d7755948951428e8334e1f49 100644
--- a/third_party/WebKit/Source/web/WebSettingsImpl.cpp
+++ b/third_party/WebKit/Source/web/WebSettingsImpl.cpp
@@ -629,6 +629,11 @@ void WebSettingsImpl::setMediaPlaybackRequiresUserGesture(bool required) {
   m_settings->setMediaPlaybackRequiresUserGesture(required);
 }
 
+void WebSettingsImpl::setMediaPlaybackInCrossOriginIframesRequiresUserGesture(
+    bool required) {
+  m_settings->setMediaPlaybackInCrossOriginIframesRequiresUserGesture(required);
+}
+
 void WebSettingsImpl::setPresentationRequiresUserGesture(bool required) {
   m_settings->setPresentationRequiresUserGesture(required);
 }