Migrate addMessageToConsole API to WebFrameClient.

This adds the console message APIs to WebFrameClient.

BUG=304341

Review URL: https://codereview.chromium.org/217283004

git-svn-id: svn://svn.chromium.org/blink/trunk@170549 bbb929c8-8fbe-4397-9dbb-9b2b20218538