Revert r170330 "DevTools: Start/Stop overview recording for available mode"
Breaks front-end compilation.

TBR=pan.deng

Review URL: https://codereview.chromium.org/216723003

git-svn-id: svn://svn.chromium.org/blink/trunk@170333 bbb929c8-8fbe-4397-9dbb-9b2b20218538