https://bugs.webkit.org/show_bug.cgi?id=102344

Reviewed by Dimitri Glazkov.

Source/WebCore:

CSSHostRule is defined in Shadow DOM spec:
http://dvcs.w3.org/hg/webcomponents/raw-file/tip/spec/shadow/index.html#css-host-rule-interface
To see or to modify @host @-rules by using inspector, we need to
implement CSSHostRule interface.

Test: fast/dom/shadow/css-hostrule-api.html

* DerivedSources.cpp:
Modified to include JSCSSHostRule.cpp.
* CMakeLists.txt:
* DerivedSources.make:
* DerivedSources.pri:
* GNUmakefile.list.am:
* Target.pri:
* WebCore.gypi:
* WebCore.vcproj/WebCore.vcproj:
* WebCore.xcodeproj/project.pbxproj:
Added CSSHostRule.cpp, CSSHostRule.h, and CSSHostRule.idl.
* bindings/js/JSCSSRuleCustom.cpp:
(WebCore::toJS):
Add a new case that the given rule is @host @-rules to support @host
@-rules.
* bindings/objc/DOMCSS.mm:
(kitClass):
Add a new case that the given rule is @host @-rules to support @host
@-rules.
* bindings/v8/custom/V8CSSRuleCustom.cpp:
(WebCore::wrap):
* css/CSSAllInOne.cpp:
* css/CSSHostRule.cpp: Added.
(WebCore):
(WebCore::CSSHostRule::CSSHostRule):
(WebCore::CSSHostRule::cssText):
* css/CSSHostRule.h: Added.
(WebCore):
(CSSHostRule):
(WebCore::CSSHostRule::create):
Implemented class CSSHostRule which inherits CSSGroupingRule.
Since CSSHostRule has the same interface as CSSGroupingRule, it is
required to implement its constructor and to override only type
method and cssText method.
* css/CSSHostRule.idl: Added.
* css/CSSRule.h:
* css/CSSRule.idl:
Added internal HOST_RULE type number.
* css/StyleResolver.cpp:
(WebCore::collectCSSOMWrappers):
* css/StyleRule.cpp:
(WebCore::StyleRuleBase::reportMemoryUsage):
(WebCore::StyleRuleBase::destroy):
(WebCore::StyleRuleBase::copy):
(WebCore::StyleRuleBase::createCSSOMWrapper):
Modified to handle StyleRuleHost.
* css/StyleRule.h:
(WebCore::StyleRuleBase::isHostRule):
(WebCore::StyleRuleHost::StyleRuleHost):
* css/StyleSheetContents.cpp:
(WebCore::childRulesHaveFailedOrCanceledSubresources):
* page/DOMWindow.idl:
Added CSSHostRule constructor.

LayoutTests:

* fast/dom/shadow/css-hostrule-api-expected.txt: Added.
* fast/dom/shadow/css-hostrule-api.html: Added.


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@140115 268f45cc-cd09-0410-ab3c-d52691b4dbfc