Reviewed by David Hyatt.

        More plug-in stream cleanup.
        
        * Plugins/WebBaseNetscapePluginStream.h:
        (WebNetscapePluginStream::create):
        (WebNetscapePluginStream::WebNetscapePluginStream):
        * Plugins/WebBaseNetscapePluginStream.mm:
        (-[WebBaseNetscapePluginStream initWithFrameLoader:]):
        (-[WebBaseNetscapePluginStream initWithRequestURL:plugin:notifyData:sendNotification:]):
        (-[WebBaseNetscapePluginStream dealloc]):
        (-[WebBaseNetscapePluginStream finalize]):
        (-[WebBaseNetscapePluginStream setPlugin:]):
        (WebNetscapePluginStream::setPlugin):
        (-[WebBaseNetscapePluginStream startStreamResponseURL:expectedContentLength:lastModifiedDate:MIMEType:headers:]):
        (-[WebBaseNetscapePluginStream _destroyStream]):



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@37255 268f45cc-cd09-0410-ab3c-d52691b4dbfc