- added ResourceError class and didFailWithError client method

        * WebCore.xcodeproj/project.pbxproj:
        * loader/icon/IconLoader.cpp:
        (WebCore::IconLoader::didFailWithError):
        (WebCore::IconLoader::didFinishLoading):
        * loader/icon/IconLoader.h:
        * loader/loader.cpp:
        (WebCore::Loader::receivedAllData):
        (WebCore::Loader::didFailWithError):
        * loader/loader.h:
        * loader/mac/SubresourceLoaderMac.mm:
        (WebCore::SubresourceLoader::didFail):
        (WebCore::SubresourceLoader::didCancel):
        * platform/cf/RetainPtr.h:
        (WebCore::):
        (WebCore::adoptCFReference):
        (WebCore::RetainPtr::RetainPtr):
        (WebCore::::adopt):
        * platform/network/ResourceError.cpp: Added.
        * platform/network/ResourceError.h: Added.
        (WebCore::ResourceError::ResourceError):
        (WebCore::ResourceError::domain):
        (WebCore::ResourceError::errorCode):
        (WebCore::ResourceError::failingURL):
        (WebCore::ResourceError::localizedDescription):
        (WebCore::ResourceError::unpackPlatformErrorIfNeeded):
        * platform/network/ResourceHandle.cpp:
        * platform/network/ResourceHandle.h:
        * platform/network/ResourceHandleClient.h:
        (WebCore::ResourceHandleClient::didFailWithError):
        * platform/network/cf/ResourceHandleCFNet.cpp:
        (WebCore::didFail):
        (WebCore::ResourceHandle::cancel):
        * platform/network/mac/ResourceErrorMac.mm: Added.
        (-[NSError WebCore]):
        * platform/network/mac/ResourceHandleMac.mm:
        (WebCore::ResourceHandle::reportError):
        * xml/xmlhttprequest.cpp:
        (WebCore::XMLHttpRequest::didFailWithError):
        (WebCore::XMLHttpRequest::didFinishLoading):
        * xml/xmlhttprequest.h:



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@17682 268f45cc-cd09-0410-ab3c-d52691b4dbfc