Since we don't consider plug-in content as a subresource, attaching plug-in streams to the datasource has no affect on the loading state of the datasource. Both stopLoading on WebFrame and _stopLoading datasource, would not stop plug-ins streams after the data source was done loading. Because of this, I've decided to not keep a list of plug-in streams attached to the data source and pulled my previous change. To fix this bug, WebBaseResourceHandleDelegate now retains the controller.

        * Plugins.subproj/WebNetscapePluginStream.m:
        (-[WebNetscapePluginStream start]):
        (-[WebNetscapePluginStream cancel]):
        (-[WebNetscapePluginStream handleDidFinishLoading:]):
        (-[WebNetscapePluginStream handle:didFailLoadingWithError:]):
        * WebView.subproj/WebBaseResourceHandleDelegate.h:
        * WebView.subproj/WebBaseResourceHandleDelegate.m:
        (-[WebBaseResourceHandleDelegate _releaseResources]):
        (-[WebBaseResourceHandleDelegate setDataSource:]):
        (-[WebBaseResourceHandleDelegate handle:willSendRequest:]):
        (-[WebBaseResourceHandleDelegate handleDidFinishLoading:]):
        (-[WebBaseResourceHandleDelegate handle:didFailLoadingWithError:]):
        (-[WebBaseResourceHandleDelegate _cancelWithError:]):
        * WebView.subproj/WebDataSourcePrivate.h:
        * WebView.subproj/WebDataSourcePrivate.m:
        (-[WebDataSourcePrivate dealloc]):
        (-[WebDataSource _stopLoading]):
        (-[WebDataSource _makeHandleDelegates:deferCallbacks:]):
        (-[WebDataSource _defersCallbacksChanged]):


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@2742 268f45cc-cd09-0410-ab3c-d52691b4dbfc