Simplify some parsing-related code

Simplify some parsing-related code

We don't need a virtual createParser function because there's only one parser.
Also, removed some unused oilpan code.

R=esprehn@chromium.org, eseidel@chromium.org

Committed: https://chromium.googlesource.com/external/mojo/+/dab63533fbcdbc197c94742d6997c622246222ba

[esprehn, 2014-11-11 17:53:39]

esprehn@chromium.org changed reviewers:
+ esprehn@chromium.org

[esprehn, 2014-11-11 17:53:39]

lgtm

https://codereview.chromium.org/712423002/diff/1/sky/engine/core/dom/Element.cpp
File sky/engine/core/dom/Element.cpp (left):

https://codereview.chromium.org/712423002/diff/1/sky/engine/core/dom/Element....
sky/engine/core/dom/Element.cpp:1723: startLineNumber =
document().scriptableDocumentParser()->lineNumber();
CSP!!

[abarth-chromium, 2014-11-11 17:56:14]

Committed patchset #1 (id:1) manually as
dab63533fbcdbc197c94742d6997c622246222ba.