DevTools: [SSP] Do not re-show color popover after going full-screen

R=eustas, lushnikov
BUG=404555

Review URL: https://codereview.chromium.org/486633002

git-svn-id: svn://svn.chromium.org/blink/trunk@180456 bbb929c8-8fbe-4397-9dbb-9b2b20218538