Merge 261707 &quotTest for WebSocketJob being deleted on the stack&quot

      > Test for WebSocketJob being deleted on the stack
> 
> SocketStreamDispatcherHost can delete the WebSocketJob while it is still
> on the stack. Add tests to ensure that WebSocketJob does not attempt to
> access its own members after being deleted.
> 
> Also fix two cases where WebSocketJob attempted to access its members after
> being deleted.
> 
> BUG=358038
> TEST=net_unittests --gtest_filter=WebSocketJobDeleteTest*
> 
> Review URL: https://codereview.chromium.org/221833002

TBR=tyoshino@chromium.org

Review URL: https://codereview.chromium.org/264743015

git-svn-id: svn://svn.chromium.org/chrome/branches/1847/src@268057 0039d316-1c4b-4281-b951-d872f2087c98