
As a component of allowing arbitrary CCs, we must allow for the Esc key to be pressed to clear autocomplete suggestions. The default behavior of gr-overlay is to close when Esc is pressed. This change supplies a property to the reply dialog gr-overlay to prevent automatically closing on Esc, and fires the cancel event manually. Feature: Issue 5832 Change-Id: Iff4d8ea49dace83bb76d0e678ffc548c101658d1