CSS3 Multicolumn: column-span should accept value 'none' (instead of '1')

CSS3 Multicolumn: column-span should accept value 'none' (instead of '1')
https://bugs.webkit.org/show_bug.cgi?id=101462

Reviewed by David Hyatt.

Source/WebCore:

According to the latest CSS3 Multi-column specification:
http://www.w3.org/TR/2011/CR-css3-multicol-20110412/#column-span

column-span should accept values [ none | all ], instead of
[ 1 | all ]. This patch updates WebKit implementation to reflect
this change in the specification. The value 1 is still supported
for compatibility reasons and is mapped to none.

No new tests, already covered by existing tests.

* css/CSSComputedStyleDeclaration.cpp:
(WebCore::CSSComputedStyleDeclaration::getPropertyCSSValue):
* css/CSSParser.cpp:
(WebCore::CSSParser::parseValue):
* css/CSSPrimitiveValueMappings.h:
(WebCore::CSSPrimitiveValue::CSSPrimitiveValue):
(WebCore::CSSPrimitiveValue::operator ColumnSpan):
* rendering/style/RenderStyle.h:
* rendering/style/RenderStyleConstants.h:

LayoutTests:

Update expected results for several test cases now that the
default value for column-span property was renamed from 1
to none.

* fast/css/getComputedStyle/computed-style-expected.txt:
* fast/css/getComputedStyle/computed-style-without-renderer-expected.txt:
* svg/css/getComputedStyle-basic-expected.txt:

git-svn-id: https://svn.webkit.org/repository/webkit/trunk@136053 268f45cc-cd09-0410-ab3c-d52691b4dbfc