Reviewed by Kevin Decker.

        More cleanup. Make a bunch of instance variables RetainPtrs.
        
        * Plugins/WebBaseNetscapePluginView.h:
        * Plugins/WebBaseNetscapePluginView.mm:
        (-[WebBaseNetscapePluginView visibleRect]):
        (-[WebBaseNetscapePluginView saveAndSetNewPortStateForUpdate:]):
        (-[WebBaseNetscapePluginView sendActivateEvent:]):
        (-[WebBaseNetscapePluginView sendDrawRectEvent:]):
        (-[WebBaseNetscapePluginView stopTimers]):
        (-[WebBaseNetscapePluginView restartTimers]):
        (-[WebBaseNetscapePluginView setHasFocus:]):
        (-[WebBaseNetscapePluginView mouseDown:]):
        (-[WebBaseNetscapePluginView mouseUp:]):
        (-[WebBaseNetscapePluginView mouseEntered:]):
        (-[WebBaseNetscapePluginView mouseExited:]):
        (-[WebBaseNetscapePluginView handleMouseMoved:]):
        (-[WebBaseNetscapePluginView mouseDragged:]):
        (-[WebBaseNetscapePluginView scrollWheel:]):
        (-[WebBaseNetscapePluginView keyUp:]):
        (-[WebBaseNetscapePluginView keyDown:]):
        (-[WebBaseNetscapePluginView flagsChanged:]):
        (-[WebBaseNetscapePluginView cut:]):
        (-[WebBaseNetscapePluginView copy:]):
        (-[WebBaseNetscapePluginView paste:]):
        (-[WebBaseNetscapePluginView selectAll:]):
        (-[WebBaseNetscapePluginView didStart]):
        (-[WebBaseNetscapePluginView start]):
        (-[WebBaseNetscapePluginView stop]):
        (-[WebBaseNetscapePluginView dataSource]):
        (-[WebBaseNetscapePluginView pluginPackage]):
        (-[WebBaseNetscapePluginView setPluginPackage:]):
        (-[WebBaseNetscapePluginView setAttributeKeys:andValues:]):
        (-[WebBaseNetscapePluginView initWithFrame:pluginPackage:URL:baseURL:MIMEType:attributeKeys:attributeValues:loadManually:DOMElement:]):
        (-[WebBaseNetscapePluginView fini]):
        (-[WebBaseNetscapePluginView dealloc]):
        (-[WebBaseNetscapePluginView pluginView:receivedError:]):
        (-[WebBaseNetscapePluginView requestWithURLCString:]):
        (-[WebBaseNetscapePluginView webFrame:didFinishLoadWithReason:]):
        (-[WebBaseNetscapePluginView loadPluginRequest:]):
        (-[WebBaseNetscapePluginView loadRequest:inTarget:withNotifyData:sendNotification:]):
        (-[WebBaseNetscapePluginView userAgent]):
        (-[WebBaseNetscapePluginView getVariable:value:]):
        (-[WebBaseNetscapePluginView setVariable:value:]):
        (-[WebBaseNetscapePluginView _createPlugin]):
        (-[WebBaseNetscapePluginView _redeliverStream]):



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@38116 268f45cc-cd09-0410-ab3c-d52691b4dbfc