Replace all remaining IDL finitude type checks with [TypeChecking=Unrestricted]

Source/core/html/track/TextTrackCue.idl

Index: Source/core/html/track/TextTrackCue.idl
diff --git a/Source/core/html/track/TextTrackCue.idl b/Source/core/html/track/TextTrackCue.idl
index b44e61103f8089c2eb4af40669020b583603ae67..d243c43edec6fece0c044815db644ffbb04cd63a 100644
--- a/Source/core/html/track/TextTrackCue.idl
+++ b/Source/core/html/track/TextTrackCue.idl
@@ -23,18 +23,21 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
+// http://www.whatwg.org/specs/web-apps/current-work/multipage/the-video-element.html#texttrackcue
+
 [
     Custom=ToV8,
     SetWrapperReferenceFrom=owner,
+    TypeChecking=Unrestricted,
     WillBeGarbageCollected,
 ] interface TextTrackCue : EventTarget {
-    readonly attribute TextTrack track;
+    readonly attribute TextTrack track; // FIXME: should be nullable
 
-    attribute DOMString id;
-    [RaisesException=Setter] attribute double startTime;
-    [RaisesException=Setter] attribute double endTime;
-    attribute boolean pauseOnExit;
+             attribute DOMString id;
+             attribute double startTime;
+             attribute double endTime;
+             attribute boolean pauseOnExit;
 
-    attribute EventHandler onenter;
-    attribute EventHandler onexit;
+             attribute EventHandler onenter;
+             attribute EventHandler onexit;
 };