https://bugs.webkit.org/show_bug.cgi?id=72331

Reviewed by Tony Chang.

Source/WebCore:

Test: fast/css-grid-layout/display-grid-set-get.html

Added parsing support for display: -webkit-grid. From a rendering perspective,
the value is equivalent to display: none until we properly implement it.

* css/CSSParser.cpp:
(WebCore::CSSParser::parseValue):
* css/CSSPrimitiveValueMappings.h:
(WebCore::CSSPrimitiveValue::CSSPrimitiveValue):
* css/CSSValueKeywords.in:
* rendering/style/RenderStyleConstants.h:
Added the new CSS value and plumbed the parsing and style application of
the new value.

* css/CSSPrimitiveValueMappings.h:
(WebCore::CSSPrimitiveValue::operator EDisplay):
Added an ASSERT here as I bumped into some non-trivial issues due to bug 72296.
-wap-marquee was offsetting the new value and was wrongly casted by the CSSPrimitiveValueMapping
logic outside the EDisplay range which would lead to crashes.

* rendering/RenderObject.cpp:
(WebCore::RenderObject::createObject):
Fixed the indentation to follow our coding rules.

LayoutTests:

* fast/css-grid-layout/display-grid-set-get-expected.txt: Added.
* fast/css-grid-layout/display-grid-set-get.html: Added.
* fast/css-grid-layout/resources/display-grid-set-get.js: Added.
Test that setting the display to -webkit-grid (from JS or CSS) works
and we get the right value back.

* platform/chromium/test_expectations.txt:
* platform/efl/Skipped:
* platform/gtk/Skipped:
* platform/mac/Skipped:
* platform/qt/Skipped:
* platform/win/Skipped:
* platform/wincairo/Skipped:
SKIP the css-grid-layout tests on all platforms for now.

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@100338 268f45cc-cd09-0410-ab3c-d52691b4dbfc