Sync the HTMLM*Element interfaces with the spec

Source/core/html/HTMLMediaElement.idl

Index: Source/core/html/HTMLMediaElement.idl
diff --git a/Source/core/html/HTMLMediaElement.idl b/Source/core/html/HTMLMediaElement.idl
index bc4888796c4af88cc97898c57193f849de0baab7..ed52c9237575361e1c612fdd4f0dcc800e2c4edc 100644
--- a/Source/core/html/HTMLMediaElement.idl
+++ b/Source/core/html/HTMLMediaElement.idl
@@ -23,6 +23,9 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
+// https://html.spec.whatwg.org/#htmlmediaelement
+
+enum CanPlayTypeResult { "" /* empty string */, "maybe", "probably" };
 [
     ActiveDOMObject,
     RuntimeEnabled=Media,
@@ -33,20 +36,18 @@
 
     // network state
     [Reflect, URL] attribute DOMString src;
-    [URL] readonly attribute DOMString currentSrc;
+    // FIXME: attribute MediaProvider? srcObject; crbug.com/387740
+    readonly attribute DOMString currentSrc;
     [Reflect, ReflectOnly=("anonymous","use-credentials"), ReflectEmpty="anonymous", ReflectInvalid="anonymous"] attribute DOMString? crossOrigin;
-
     const unsigned short NETWORK_EMPTY = 0;
     const unsigned short NETWORK_IDLE = 1;
     const unsigned short NETWORK_LOADING = 2;
     const unsigned short NETWORK_NO_SOURCE = 3;
     readonly attribute unsigned short networkState;
     attribute DOMString preload;
-
     readonly attribute TimeRanges buffered;
     void load();
-    DOMString canPlayType(DOMString type);
-    [RuntimeEnabled=PrefixedEncryptedMedia, DeprecateAs=CanPlayTypeKeySystem] DOMString canPlayType(DOMString type, [TreatUndefinedAs=NullString] DOMString? keySystem);
+    CanPlayTypeResult canPlayType(DOMString type);
 
     // ready state
     const unsigned short HAVE_NOTHING = 0;
@@ -59,7 +60,9 @@
 
     // playback state
     [RaisesException=Setter] attribute double currentTime;
+    // FIXME: void fastSeek(double time);
     readonly attribute unrestricted double duration;
+    // FIXME: Date getStartDate(); crbug.com/312699
     readonly attribute boolean paused;
     attribute double defaultPlaybackRate;
     attribute double playbackRate;
@@ -82,16 +85,19 @@
     [Reflect=muted] attribute boolean defaultMuted;
 
     // tracks
-    [RuntimeEnabled=AudioVideoTracks] readonly attribute AudioTrackList audioTracks;
-    [RuntimeEnabled=AudioVideoTracks] readonly attribute VideoTrackList videoTracks;
-    readonly attribute TextTrackList textTracks;
+    [SameObject, RuntimeEnabled=AudioVideoTracks] readonly attribute AudioTrackList audioTracks;
+    [SameObject, RuntimeEnabled=AudioVideoTracks] readonly attribute VideoTrackList videoTracks;
+    [SameObject] readonly attribute TextTrackList textTracks;
     [RaisesException] TextTrack addTextTrack(TextTrackKind kind, optional DOMString label = "", optional DOMString language = "");
 
-    // WebKit extensions
+    // Subresource Integrity
+    // http://w3c.github.io/webappsec/specs/subresourceintegrity/
+    // FIXME: The spec does not extend HTMLAnchorElement.
+    [Reflect, RuntimeEnabled=SubresourceIntegrity] attribute DOMString integrity;
 
+    // Non-standard APIs
+    [RuntimeEnabled=PrefixedEncryptedMedia, DeprecateAs=CanPlayTypeKeySystem] DOMString canPlayType(DOMString type, [TreatUndefinedAs=NullString] DOMString? keySystem);
     // The number of bytes consumed by the media decoder.
     [MeasureAs=PrefixedAudioDecodedByteCount] readonly attribute unsigned long webkitAudioDecodedByteCount;
     [MeasureAs=PrefixedVideoDecodedByteCount] readonly attribute unsigned long webkitVideoDecodedByteCount;
-
-    [Reflect, RuntimeEnabled=SubresourceIntegrity] attribute DOMString integrity;
 };