DevTools: [JSDoc] Check that non-object types are not prefixed with '!'

R=aandrey, vsevik

Review URL: https://codereview.chromium.org/742653003

git-svn-id: svn://svn.chromium.org/blink/trunk@185573 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Devtools Animations: Separate global pause from playback rate

BUG=432368

Review URL: https://codereview.chromium.org/741663002

git-svn-id: svn://svn.chromium.org/blink/trunk@185574 bbb929c8-8fbe-4397-9dbb-9b2b20218538