https://bugs.webkit.org/show_bug.cgi?id=71152

Reviewed by Darin Adler.

Source/WebCore:

Support case-sensitive attribute name selecting for non HTML. In order to do this we have to
store the attribute name in the selector as-is when css parsing, and get the lowercase localName
on demand for case-insensitive matching. The only time we want case-insensitive matching is when
we try to match a HTML element in a HTML document.

Tests: fast/dom/SelectorAPI/attrname-case-insensitive.html
       fast/dom/SelectorAPI/attrname-case-sensitive.xhtml
       svg/css/case-sensitive-attrname-selectors.html

* css/CSSGrammar.y.in: do not lowercase attribute selector name.
* css/CSSParserValues.h:
(WebCore::CSSParserSelector::setAttribute):
* css/CSSSelector.cpp:
(WebCore::CSSSelector::setAttribute):
* css/CSSSelector.h: allow access to lowered version of attribute localName if needed.
(WebCore::CSSSelector::attributeCanonicalLocalName):
* css/SelectorChecker.cpp:
(WebCore::anyAttributeMatches): do only case-insensitive matching for HTML.
(WebCore::SelectorChecker::checkOne):
* css/SelectorChecker.h:
(WebCore::SelectorChecker::checkExactAttribute): do only case-insensitive matching for HTML.
* css/SelectorCheckerFastPath.cpp:
(WebCore::HTMLNames::checkExactAttributeValue):
* css/SelectorCheckerFastPath.h:
(WebCore::SelectorCheckerFastPath::matchesRightmostAttributeSelector):
* dom/Attribute.h:
(WebCore::Attribute::matches): use more convenient parameters.

LayoutTests:

Results matches FireFox nightly.

* fast/dom/SelectorAPI/attrname-case-insensitive-expected.txt: Added.
* fast/dom/SelectorAPI/attrname-case-insensitive.html: Check that in HTML documents CSS selectors
use case-insensitive attribute name matching for HTML elements, case-sensitive otherwise.
* fast/dom/SelectorAPI/attrname-case-sensitive-expected.txt: Added.
* fast/dom/SelectorAPI/attrname-case-sensitive.xhtml: Check that in XHTML documents CSS selectors
always use case-sensitive attribute name matching.
* svg/css/case-sensitive-attrname-selectors-expected.txt: Added.
* svg/css/case-sensitive-attrname-selectors.html: Check that in HTML documents CSS selectors in stylesheets
use case-insensitive attribute name matching for HTML elements, case-sensitive otherwise.

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@153631 268f45cc-cd09-0410-ab3c-d52691b4dbfc