Sync VTTCue.align/vertical with spec

LayoutTests/media/track/track-cue-mutable.html

Index: LayoutTests/media/track/track-cue-mutable.html
diff --git a/LayoutTests/media/track/track-cue-mutable.html b/LayoutTests/media/track/track-cue-mutable.html
index 28d050b2c073bbb33f7e963d50eec8b39072a462..698bfb88f8cd0c45fcbc7bd8da2de11d5820aa9c 100644
--- a/LayoutTests/media/track/track-cue-mutable.html
+++ b/LayoutTests/media/track/track-cue-mutable.html
@@ -46,9 +46,9 @@
                 run("textCue.pauseOnExit = true");
                 testExpected("textCue.pauseOnExit", true);
 
-                logSpecURL("http://www.whatwg.org/specs/web-apps/current-work/multipage/the-video-element.html#dom-texttrackcue-vertical", 
-                           "On setting, the text track cue writing direction must be set to the value ... is a case-sensitive match for the new value, if any. If none of the values match, then the user agent must instead throw a SyntaxError exception.");
-                testDOMException("textCue.vertical = 'RL'", "DOMException.SYNTAX_ERR");
+                logSpecURL("http://dev.w3.org/html5/webvtt/#dfn-dom-vttcue-vertical",
+                           "On setting, the text track cue writing direction must be set to the value given in the first cell of the row in the table above whose second cell is a case-sensitive match for the new value.");
+                run("textCue.vertical = 'RL'");
                 testExpected("textCue.vertical", "");
                 run("textCue.vertical = 'rl'");
                 testExpected("textCue.vertical", "rl");
@@ -84,9 +84,9 @@
                 run("textCue.size = 57");
                 testExpected("textCue.size", 57);
 
-                logSpecURL("http://www.whatwg.org/specs/web-apps/current-work/multipage/the-video-element.html#dom-texttrackcue-align",
-                           "On setting, the text track cue alignment must be set to the value ... is a case-sensitive match for the new value, if any. If none of the values match, then the user agent must instead throw a SyntaxError exception.");
-                testDOMException("textCue.align = 'End'", "DOMException.SYNTAX_ERR");
+                logSpecURL("http://dev.w3.org/html5/webvtt/#dfn-dom-vttcue-align",
+                           "On setting, the text track cue text alignment must be set to the value given in the first cell of the row in the table above whose second cell is a case-sensitive match for the new value.");
+                run("textCue.align = 'End'");
                 testExpected("textCue.align", "middle");
                 run("textCue.align = 'end'");
                 testExpected("textCue.align", "end");