Make Comment constructable

Make Comment constructable

http://dom.spec.whatwg.org/#comment

This allows us to do `new Comment('abc')` instead of
`document.createComment('abc')`.

BUG=238233
Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=149821

[eseidel, 2013-05-06 21:02:01]

lgtm

[commit-bot: I haz the power, 2013-05-06 21:02:16]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/arv@chromium.org/14931009/1

[commit-bot: I haz the power, 2013-05-06 21:02:21]

Failed to apply patch for LayoutTests/fast/dom/dom-constructors.html:
While running patch -p1 --forward --force --no-backup-if-mismatch;
  patching file LayoutTests/fast/dom/dom-constructors.html
  Hunk #2 FAILED at 55.
  1 out of 2 hunks FAILED -- saving rejects to file
LayoutTests/fast/dom/dom-constructors.html.rej

Patch:       LayoutTests/fast/dom/dom-constructors.html
Index: LayoutTests/fast/dom/dom-constructors.html
diff --git a/LayoutTests/fast/dom/dom-constructors.html
b/LayoutTests/fast/dom/dom-constructors.html
index
9198d2bc52ce517e45d0a7879603a75c1cf52288..a48451d00bc3eacc5bf8c2165c585742dd67d005
100644
--- a/LayoutTests/fast/dom/dom-constructors.html
+++ b/LayoutTests/fast/dom/dom-constructors.html
@@ -13,7 +13,7 @@ var element = document.getElementById("element");
 // with no arguments. (Some of them may have working constructors that require
 // arguments to be valid.)
 var objects_exception = [
-    'Attr', 'CharacterData', 'CDATASection', 'Comment', 'Document',
+    'Attr', 'CharacterData', 'CDATASection', 'Document',
     'DocumentFragment', 'DocumentType', 'Element', 'Entity',
     'EntityReference', 'HTMLDocument', 'Node', 'Notation',
     'ProcessingInstruction', 'Text', 'HTMLAllCollection', 'HTMLAnchorElement',
@@ -55,7 +55,7 @@ var objects_exception = [
 
 // These objects should have a working constructor.
 var objects_constructor = [
-    'DOMParser', 'XMLHttpRequest', 'XMLSerializer', 'XPathEvaluator',
+    'Comment', 'DOMParser', 'XMLHttpRequest', 'XMLSerializer',
'XPathEvaluator',
     'XSLTProcessor'
 ];

[commit-bot: I haz the power, 2013-05-06 22:33:39]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/arv@chromium.org/14931009/6001

[commit-bot: I haz the power, 2013-05-06 23:20:47]

Change committed as 149821