Now that the Chrome side sets SharedWorkerRepositoryClient on WebFrame, we can remove the WebView setter.

BUG=304341

Review URL: https://codereview.chromium.org/102673006

git-svn-id: svn://svn.chromium.org/blink/trunk@164110 bbb929c8-8fbe-4397-9dbb-9b2b20218538