https://bugs.webkit.org/show_bug.cgi?id=95382

Reviewed by Ojan Vafai.

Everyone is already enabling this by default and the spec has stablized.

.:

* Source/cmake/WebKitFeatures.cmake:
* Source/cmakeconfig.h.cmake:
* configure.ac:

Source/JavaScriptCore:

* Configurations/FeatureDefines.xcconfig:

Source/WebCore:

No new tests, shouldn't change anything.

* Configurations/FeatureDefines.xcconfig:
* GNUmakefile.am:
* GNUmakefile.features.am:
* css/CSSComputedStyleDeclaration.cpp:
(WebCore):
(WebCore::CSSComputedStyleDeclaration::getPropertyCSSValue):
* css/CSSParser.cpp:
(WebCore::isValidKeywordPropertyAndValue): Expand check range to include flex and inline-flex.
(WebCore::isKeywordPropertyID):
(WebCore::CSSParser::parseValue):
* css/CSSPrimitiveValueMappings.h:
(WebCore::CSSPrimitiveValue::CSSPrimitiveValue):
* css/CSSProperty.cpp:
(WebCore::CSSProperty::isInheritedProperty):
* css/CSSPropertyNames.in:
* css/CSSValueKeywords.in:
* css/StyleBuilder.cpp:
(WebCore::StyleBuilder::StyleBuilder):
* css/StylePropertySet.cpp:
(WebCore::StylePropertySet::getPropertyValue):
(WebCore::StylePropertySet::asText):
* css/StylePropertyShorthand.cpp:
(WebCore::webkitFlexShorthand):
(WebCore::shorthandForProperty):
* css/StylePropertyShorthand.h:
(WebCore):
* css/StyleResolver.cpp:
(WebCore::StyleResolver::collectMatchingRulesForList):
* page/animation/CSSPropertyAnimation.cpp:
(WebCore::CSSPropertyAnimation::ensurePropertyMap):
* rendering/RenderObject.cpp:
(WebCore::RenderObject::createObject):
* rendering/style/RenderStyle.h:
* rendering/style/RenderStyleConstants.h:

Source/WebKit/chromium:

* features.gypi:

Source/WebKit/mac:

* Configurations/FeatureDefines.xcconfig:

Source/WebKit2:

* Configurations/FeatureDefines.xcconfig:

Tools:

* Scripts/webkitperl/FeatureList.pm:
* qmake/mkspecs/features/features.pri:

WebKitLibraries:

* win/tools/vsprops/FeatureDefines.vsprops:
* win/tools/vsprops/FeatureDefinesCairo.vsprops:

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@127318 268f45cc-cd09-0410-ab3c-d52691b4dbfc