mViewSource=PR_FALSE; mHistoryService = nsnull;
nsWebShell::nsWebShell() : nsDocShell(){#ifdef DEBUG  // We're counting the number of |nsWebShells| to help find leaks  ++gNumberOfWebShells;#endif#ifdef DEBUG    printf("WEBSHELL+ = %ld\n", gNumberOfWebShells);#endif  NS_INIT_REFCNT();  mThreadEventQueue = nsnull;  InitFrameData();  mItemType = typeContent;  mCharsetReloadState = eCharsetReloadInit;  mHistoryState = nsnull;  mFiredUnloadEvent = PR_FALSE;  mBounds.SetRect(0, 0, 0, 0);}