mStreamOffset = 0;
nsPluginStreamInfo::nsPluginStreamInfo(){  NS_INIT_REFCNT();  mPluginInstance = nsnull;  mPluginStreamListenerPeer = nsnull;  mContentType = nsnull;  mURL = nsnull;  mFilePath = nsnull;  mSeekable = PR_FALSE;  mLength = 0;  mModified = 0;  mLocallyCached = PR_FALSE;}