Call sites use either RemoteFrameNetworkingContext or WebFrameNetworkingContext directly depending on whether NetworkProcess is in use or not. Remove unused WebProcess methods to avoid confusion.
Created attachment 206721 [details] Patch
Comment on attachment 206721 [details] Patch Attachment 206721 [details] did not pass qt-wk2-ews (qt-wk2): Output: http://webkit-queues.appspot.com/results/1092055
Comment on attachment 206721 [details] Patch Attachment 206721 [details] did not pass efl-wk2-ews (efl-wk2): Output: http://webkit-queues.appspot.com/results/1094050
Oops I didn't notice that there is EnsurePrivateBrowsingSession message in WebProcess.
Comment on attachment 206721 [details] Patch Attachment 206721 [details] did not pass mac-wk2-ews (mac-wk2): Output: http://webkit-queues.appspot.com/results/1092059
Comment on attachment 206721 [details] Patch Attachment 206721 [details] did not pass mac-ews (mac): Output: http://webkit-queues.appspot.com/results/1092065