Adding supported checks & test for SpeechRecognition APIs.

tools/dom/templates/html/dart2js/impl_SpeechRecognition.darttemplate

-// Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
-// WARNING: Do not edit - generated code.
-
 part of $LIBRARYNAME;
 
+

[Emily Fortuna, 2013/01/19 01:24:58]

remove extra newline?

[blois, 2013/01/19 01:46:39]

Done.

 $(ANNOTATIONS)class $CLASSNAME$EXTENDS$IMPLEMENTS$NATIVESPEC {
-  factory $CLASSNAME() => document.$dom_createRange();

[Emily Fortuna, 2013/01/19 01:24:58]

why get rid of the constructor? I thought using document.$dom_createEvent was
probably a bad sign about our API...?

[blois, 2013/01/19 01:46:39]

Diff is odd for this one, but I didn't remove the constructor for
SpeechRecognition, just patched it to work on dart2js.

We've been adding constructors to events which have init*Event calls, but the
SpeechRecognition ones do not. In general, I'm not sure that this is really
something we expect people to construct.

I added an Event.tag constructor to avoid the $dom_ calls, but for uncommon
types, I think we can avoid them similarly to uncommon HTML elements.

-
 $!MEMBERS
+  static SpeechRecognition _create() {
+    return JS('SpeechRecognition',
+        'new (window.SpeechRecognition || window.webkitSpeechRecognition)()');
+  }
 }