mParserToUnblock(nsnull),
mTitle(aTitle), mParserToUnblock(aParserToUnblock),
SheetLoadData::SheetLoadData(CSSLoaderImpl* aLoader,                             nsIURI* aURI,                             nsICSSStyleSheet* aSheet,                             PRBool aSyncLoad,                             nsICSSLoaderObserver* aObserver)  : mLoader(aLoader),    mParserToUnblock(nsnull),    mURI(aURI),    mSheet(aSheet),    mNext(nsnull),    mParentData(nsnull),    mPendingChildren(0),    mSyncLoad(aSyncLoad),    mIsAgent(PR_TRUE),    mIsLoading(PR_FALSE),    mIsCancelled(PR_FALSE),    mOwningElement(nsnull),    mObserver(aObserver){  NS_PRECONDITION(mLoader, "Must have a loader!");  NS_ADDREF(mLoader);}