[CSSRegions]Rename NamedFlow::contentNodes to NamedFlow::getContent()

[CSSRegions]Rename NamedFlow::contentNodes to NamedFlow::getContent()
https://bugs.webkit.org/show_bug.cgi?id=90163

Patch by Andrei Onea <onea@adobe.com> on 2012-06-28
Reviewed by Andreas Kling.

Source/WebCore:

Latest CSS Regions spec defines the NamedFlow interface as having a function named getContent,
rather than an attribute named contentNodes.
http://www.w3.org/TR/css3-regions/#the-namedflow-interface

Test: fast/regions/webkit-named-flow-get-content.html

* dom/WebKitNamedFlow.cpp:
(WebCore::WebKitNamedFlow::getContent):
* dom/WebKitNamedFlow.h:
(WebKitNamedFlow):
* dom/WebKitNamedFlow.idl:

LayoutTests:

Changed test for NameFlow::contentNodes to reflect new spec, which uses
NameFlow::getContent().

* fast/regions/webkit-named-flow-content-nodes-expected.txt: Removed.
* fast/regions/webkit-named-flow-get-content-expected.txt: Added.
* fast/regions/webkit-named-flow-get-content.html: Renamed from LayoutTests/fast/regions/webkit-named-flow-content-nodes.html.

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@121456 268f45cc-cd09-0410-ab3c-d52691b4dbfc