DevTools: Ignore execution line changed events while editing.

This CL replaces the white-list of cases when execution line should be revealed on a new location
with a black list that only skips execution line revealing in case of editing.

BUG=332262

Review URL: https://codereview.chromium.org/337243006

git-svn-id: svn://svn.chromium.org/blink/trunk@177319 bbb929c8-8fbe-4397-9dbb-9b2b20218538