DevTools: remove references to modules/device_orientation from core

BUG=340221

Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=166493

Review URL: https://codereview.chromium.org/150913003

git-svn-id: svn://svn.chromium.org/blink/trunk@166728 bbb929c8-8fbe-4397-9dbb-9b2b20218538