Reviewed by Brady and Sam.

        Add ApplicationCache implementation. Stub out ApplicationCacheGroup methods
        needed by ApplicationCache.
        
        * loader/appcache/ApplicationCache.cpp:
        (WebCore::ApplicationCache::ApplicationCache):
        (WebCore::ApplicationCache::~ApplicationCache):
        (WebCore::ApplicationCache::setManifestResource):
        (WebCore::ApplicationCache::addResource):
        (WebCore::ApplicationCache::removeResource):
        (WebCore::ApplicationCache::resourceForURL):
        (WebCore::ApplicationCache::resourceForRequest):
        (WebCore::ApplicationCache::numDynamicEntries):
        (WebCore::ApplicationCache::dynamicEntry):
        (WebCore::ApplicationCache::addDynamicEntry):
        (WebCore::ApplicationCache::removeDynamicEntry):
        (WebCore::ApplicationCache::setOnlineWhitelist):
        (WebCore::ApplicationCache::isURLInOnlineWhitelist):
        (WebCore::ApplicationCache::dump):
        * loader/appcache/ApplicationCache.h:
        (WebCore::ApplicationCache::create):
        (WebCore::ApplicationCache::manifestResource):
        (WebCore::ApplicationCache::group):
        (WebCore::ApplicationCache::begin):
        (WebCore::ApplicationCache::end):
        * loader/appcache/ApplicationCacheGroup.h:
        (WebCore::ApplicationCacheGroup::manifestURL):
        (WebCore::ApplicationCacheGroup::cacheDestroyed):



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@31973 268f45cc-cd09-0410-ab3c-d52691b4dbfc