Autoplay: use an autoplay policy setting in Blink.

third_party/WebKit/LayoutTests/media/media-play-promise.html

Index: third_party/WebKit/LayoutTests/media/media-play-promise.html
diff --git a/third_party/WebKit/LayoutTests/media/media-play-promise.html b/third_party/WebKit/LayoutTests/media/media-play-promise.html
index 80ba9ad0f00603ccdeed266c152c74df8668be0a..d83ff1e10f2b967f8fcaa27fa62580ad3a378396 100644
--- a/third_party/WebKit/LayoutTests/media/media-play-promise.html
+++ b/third_party/WebKit/LayoutTests/media/media-play-promise.html
@@ -315,7 +315,7 @@ var tests = [
 ];
 
 tests.forEach(function(test) {
-    internals.settings.setMediaPlaybackRequiresUserGesture(false);
+    internals.settings.setAutoplayPolicy('no-user-gesture-required');
     async_test(function(t) {
         var audio = document.createElement("audio");
         test(t, audio);
@@ -339,7 +339,7 @@ var testsWithUserGesture = [
 ];
 
 testsWithUserGesture.forEach(function(test) {
-    internals.settings.setMediaPlaybackRequiresUserGesture(true);
+    internals.settings.setAutoplayPolicy('user-gesture-required');
     async_test(function(t) {
         var audio = document.createElement("audio");
         test(t, audio);