DevTools: follow up to r183187, restore settings toolbar item.
DevTools: follow up to r183187, restore settings toolbar item.

TBR=apavlov

Review URL: https://codereview.chromium.org/630663002

git-svn-id: bf5cd6ccde378db821296732a091cfbcf5285fbd@183231 bbb929c8-8fbe-4397-9dbb-9b2b20218538

primiano/blink-gitcs,primiano/blink-gitcs,primiano/blink-gitcs,primiano/blink-gitcs,primiano/blink-gitcs,primiano/blink-gitcs,primiano/blink-gitcs,primiano/blink-gitcs,primiano/blink-gitcs