Index: third_party/WebKit/LayoutTests/imported/wpt/encrypted-media/polyfill/chrome-polyfill.js |
diff --git a/third_party/WebKit/LayoutTests/imported/wpt/encrypted-media/polyfill/chrome-polyfill.js b/third_party/WebKit/LayoutTests/imported/wpt/encrypted-media/polyfill/chrome-polyfill.js |
new file mode 100644 |
index 0000000000000000000000000000000000000000..2f11497ccafc73a462f9c269ee2b3d2e72a7e2d8 |
--- /dev/null |
+++ b/third_party/WebKit/LayoutTests/imported/wpt/encrypted-media/polyfill/chrome-polyfill.js |
@@ -0,0 +1,37 @@ |
+(function(){ |
+ if( navigator.userAgent.toLowerCase().indexOf('edge') === -1 |
+ && navigator.userAgent.toLowerCase().indexOf('chrome') > -1){ |
+ |
+ if ( ( /chrome\/([0-9]*)\./.exec( navigator.userAgent.toLowerCase() )[1] | 0 ) < 54 ) { |
+ |
+ // Work around https://bugs.chromium.org/p/chromium/issues/detail?id=622956 |
+ // Chrome does not fire the empty keystatuschange event when a session is closed |
+ var _mediaKeySessionClose = MediaKeySession.prototype.close; |
+ var _mediaKeySessionKeyStatusesGetter = Object.getOwnPropertyDescriptor( MediaKeySession.prototype, 'keyStatuses' ).get; |
+ var _emptyMediaKeyStatusMap = { size: 0, |
+ has: function() { return false; }, |
+ get: function() { return undefined; }, |
+ entries:function() { return []; }, // this may not be correct, I think it should be some iterator thing |
+ keys: function() { return []; }, |
+ values: function() { return []; }, |
+ forEach:function() { return; } }; |
+ |
+ MediaKeySession.prototype.close = function close() |
+ { |
+ this.__closed = true; |
+ |
+ setTimeout( function() { |
+ this.dispatchEvent( new Event( 'keystatuseschange' ) ); |
+ }.bind( this ), 0 ); |
+ |
+ return _mediaKeySessionClose.call( this ); |
+ }; |
+ |
+ Object.defineProperty( MediaKeySession.prototype, 'keyStatuses', { get: function() { |
+ |
+ return this.__closed ? _emptyMediaKeyStatusMap : _mediaKeySessionKeyStatusesGetter.call( this ); |
+ |
+ } } ); |
+ } |
+ } |
+}()); |