resource data as it is loaded. Instead, this buffering task has been moved
	out to the WebResourceClient, WebMainResourceClient in this case. This
	change is a "proof of concept" for the upcoming change where the API in
	WebFoundation for buffering resource data in WebResourceHandle will be
	removed altogether.

        * WebView.subproj/WebDataSource.m:
        (-[WebDataSource data]): Changed to call WebMainResourceClient when resource data is needed.
        * WebView.subproj/WebMainResourceClient.h: Added mutable data ivar.
        * WebView.subproj/WebMainResourceClient.m:
        (-[WebMainResourceClient initWithDataSource:]): Added mutable data ivar.
        (-[WebMainResourceClient dealloc]): Release new mutable data ivar.
        (-[WebMainResourceClient resourceData]): Added accessor method.
        (-[WebMainResourceClient handleDidReceiveData:data:]): Append received data to the new mutable data object.


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@1957 268f45cc-cd09-0410-ab3c-d52691b4dbfc