Revert 172912 "Get the WebGeolocationClient from WebFrameClient ..."

Breaks the following browser_tests:
CancelPermissionForFrame
IFramesWithCachedPosition
IFramesWithFreshPosition
NoInfoBarBeforeStart
GeolocationAPIEmbedderHasAccessMultipleBridgeIdAllow

> Get the WebGeolocationClient from WebFrameClient instead of WebViewClient.
> 
> BUG=304341
> 
> Review URL: https://codereview.chromium.org/256843004

TBR=jam@chromium.org

Review URL: https://codereview.chromium.org/254253003

git-svn-id: svn://svn.chromium.org/blink/trunk@172953 bbb929c8-8fbe-4397-9dbb-9b2b20218538