Reviewed by Darin.

    Reviewed by Darin.

        Have ResourceResponse hold on to the platform object and do lazy
        initialization of the data members.

        * WebCore.xcodeproj/project.pbxproj:
        * loader/mac/FrameLoaderMac.mm:
        (WebCore::FrameLoader::loadResourceSynchronously):
        * platform/network/ResourceRequest.cpp:
        (WebCore::ResourceRequest::updatePlatformRequest):
        (WebCore::ResourceRequest::updateResourceRequest):
        * platform/network/ResourceResponse.cpp: Added.
        (WebCore::ResourceResponse::url):
        (WebCore::ResourceResponse::mimeType):
        (WebCore::ResourceResponse::expectedContentLength):
        (WebCore::ResourceResponse::textEncodingName):
        (WebCore::ResourceResponse::suggestedFilename):
        (WebCore::ResourceResponse::httpStatusCode):
        (WebCore::ResourceResponse::setHTTPStatusCode):
        (WebCore::ResourceResponse::httpStatusText):
        (WebCore::ResourceResponse::setHTTPStatusText):
        (WebCore::ResourceResponse::httpHeaderField):
        (WebCore::ResourceResponse::httpHeaderFields):
        (WebCore::ResourceResponse::setExpirationDate):
        (WebCore::ResourceResponse::expirationDate):
        (WebCore::ResourceResponse::setLastModifiedDate):
        (WebCore::ResourceResponse::lastModifiedDate):
        (WebCore::ResourceResponse::updateResourceResponse):
        * platform/network/ResourceResponse.h:
        (WebCore::ResourceResponse::ResourceResponse):
        (WebCore::ResourceResponse::isMultipart):
        * platform/network/mac/ResourceHandleMac.mm:
        (WebCore::ResourceHandle::receivedResponse):
        (WebCore::ResourceHandle::willSendRequest):
        * platform/network/mac/ResourceResponseMac.h: Removed.
        * platform/network/mac/ResourceResponseMac.mm:
        (-[NSURLResponse WebCore]):

git-svn-id: https://svn.webkit.org/repository/webkit/trunk@17921 268f45cc-cd09-0410-ab3c-d52691b4dbfc