Move MockScreenOrientationController to content/shell/renderer/test_runner/

Move MockScreenOrientationController to content/shell/renderer/test_runner/ and
have it implement the blink::WebScreenOrientationClient API so that locking /
unlocking works from layout tests.

[email protected], [email protected]

Review URL: https://codereview.chromium.org/339913002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@280209 0039d316-1c4b-4281-b951-d872f2087c98
16 files changed