Reviewed by Dave Hyatt.

        Move a bunch of instance variables into the C++ class.
        
        * Plugins/WebBaseNetscapePluginStream.h:
        * Plugins/WebBaseNetscapePluginStream.mm:
        (-[WebBaseNetscapePluginStream _pluginCancelledConnectionError]):
        (-[WebBaseNetscapePluginStream errorForReason:]):
        (-[WebBaseNetscapePluginStream initWithRequest:plugin:notifyData:sendNotification:]):
        (-[WebBaseNetscapePluginStream initWithRequestURL:plugin:notifyData:sendNotification:]):
        (-[WebBaseNetscapePluginStream dealloc]):
        (-[WebBaseNetscapePluginStream setRequestURL:]):
        (-[WebBaseNetscapePluginStream setResponseURL:]):
        (-[WebBaseNetscapePluginStream setMIMEType:]):
        (-[WebBaseNetscapePluginStream startStreamResponseURL:expectedContentLength:lastModifiedDate:MIMEType:headers:]):
        (-[WebBaseNetscapePluginStream _destroyStream]):
        (-[WebBaseNetscapePluginStream _destroyStreamWithReason:]):
        (-[WebBaseNetscapePluginStream _deliverData]):
        (-[WebBaseNetscapePluginStream receivedData:]):



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@36499 268f45cc-cd09-0410-ab3c-d52691b4dbfc