https://bugs.webkit.org/show_bug.cgi?id=24462
        Move cross-origin access control code out of XMLHttpRequest

        Step 1: move preflight result cache and access control helper functions.

        No change in behavior, so no test.

        * GNUmakefile.am:
        * WebCore.pro:
        * WebCore.scons:
        * WebCore.vcproj/WebCore.vcproj:
        * WebCore.xcodeproj/project.pbxproj:
        * WebCoreSources.bkl:
        * loader/CrossOriginAccessControl.cpp: Added.
        (WebCore::isOnAccessControlSimpleRequestHeaderWhitelist):
        (WebCore::isSimpleCrossOriginAccessRequest):
        (WebCore::createAllowedCrossOriginResponseHeadersSet):
        (WebCore::isOnAccessControlResponseHeaderWhitelist):
        (WebCore::passesAccessControlCheck):
        * loader/CrossOriginAccessControl.h: Added.
        * loader/CrossOriginPreflightResultCache.cpp: Added.
        (WebCore::parseAccessControlMaxAge):
        (WebCore::addToAccessControlAllowList):
        (WebCore::parseAccessControlAllowList):
        (WebCore::CrossOriginPreflightResultCacheItem::parse):
        (WebCore::CrossOriginPreflightResultCacheItem::allowsCrossOriginMethod):
        (WebCore::CrossOriginPreflightResultCacheItem::allowsCrossOriginHeaders):
        (WebCore::CrossOriginPreflightResultCacheItem::allowsRequest):
        (WebCore::CrossOriginPreflightResultCache::shared):
        (WebCore::CrossOriginPreflightResultCache::appendEntry):
        (WebCore::CrossOriginPreflightResultCache::canSkipPreflight):
        * loader/CrossOriginPreflightResultCache.h: Added.
        (WebCore::CrossOriginPreflightResultCacheItem::CrossOriginPreflightResultCacheItem):
        (WebCore::CrossOriginPreflightResultCache::CrossOriginPreflightResultCache):
        * xml/XMLHttpRequest.cpp:
        (WebCore::XMLHttpRequestStaticData::XMLHttpRequestStaticData):
        (WebCore::XMLHttpRequest::createRequest):
        (WebCore::XMLHttpRequest::makeCrossOriginAccessRequest):
        (WebCore::XMLHttpRequest::makeSimpleCrossOriginAccessRequest):
        (WebCore::XMLHttpRequest::makeCrossOriginAccessRequestWithPreflight):
        (WebCore::XMLHttpRequest::didReceiveResponse):
        (WebCore::XMLHttpRequest::didReceiveResponsePreflight):
        * xml/XMLHttpRequest.h:



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@41548 268f45cc-cd09-0410-ab3c-d52691b4dbfc