Make sure ProfilesPanel is initialized if we receive CPU profile recorded using console API

BUG=327298
R=alph@chromium.org

Review URL: https://codereview.chromium.org/112063004

git-svn-id: svn://svn.chromium.org/blink/trunk@163779 bbb929c8-8fbe-4397-9dbb-9b2b20218538