Add the webview zygote socket to the zygote whitelist.

Allow the webview zygote socket to be open at time of fork, so that
webview renderers can be forked successfully.

Test: WebView functions correctly with multiprocess dev setting enabled
Bug: 21643067
Change-Id: I312846433a43a8e4548cb2f98b96b56acf9f5333
1 file changed