Add a UseCounter for Element.webkitMatchesSelector

Add a UseCounter for Element.webkitMatchesSelector

http://dom.spec.whatwg.org/#dom-element-matches

Element.matches(selector) is now in DOM Standard, so the prefixed API
should be removed as soon as reality allows.

BUG=326652
Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=163375

[eseidel, 2013-12-07 00:41:45]

lgtm

[commit-bot: I haz the power, 2013-12-07 00:43:41]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/philipj@opera.com/108063006/1

[commit-bot: I haz the power, 2013-12-07 00:43:43]

Failed to apply patch for Source/core/dom/Element.idl:
While running patch -p1 --forward --force --no-backup-if-mismatch;
  patching file Source/core/dom/Element.idl
  Hunk #1 FAILED at 100.
  1 out of 1 hunk FAILED -- saving rejects to file
Source/core/dom/Element.idl.rej

Patch:       Source/core/dom/Element.idl
Index: Source/core/dom/Element.idl
diff --git a/Source/core/dom/Element.idl b/Source/core/dom/Element.idl
index
b80c23a9c8c3f0927ef0d965b8a43a78c58c45e4..8afde2eaed9e1f21e66e54d1f3fd14d6035bfc13
100644
--- a/Source/core/dom/Element.idl
+++ b/Source/core/dom/Element.idl
@@ -100,7 +100,7 @@
     [RaisesException] NodeList querySelectorAll(DOMString selectors);
 
     // WebKit extension
-    [RaisesException] boolean webkitMatchesSelector([Default=Undefined]
optional DOMString selectors);
+    [RaisesException, MeasureAs=ElementPrefixedMatchesSelector] boolean
webkitMatchesSelector([Default=Undefined] optional DOMString selectors);
 
     // Shadow DOM API
     [RuntimeEnabled=ShadowDOM, Reflect, TreatNullAs=NullString,
PerWorldBindings] attribute DOMString pseudo;

[commit-bot: I haz the power, 2013-12-07 19:55:43]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/philipj@opera.com/108063006/20001

[commit-bot: I haz the power, 2013-12-07 21:19:14]

Change committed as 163375

[arv (Not doing code reviews), 2013-12-09 14:49:07]

LGTM