IMS_VT: Bring Call to foreground if upgrade request failed

- When we send an upgrade request and device goes to background
  before remote user accepts/rejects the request, bring call to
  foreground if upgrade request fails either due to remote user
  rejecting the upgrade request or request times out or due to
  other errors.`

Change-Id: I7f4afc6a508d41f37485b68b9b90500ec23ba5d6
CRs-Fixed: 780026
1 file changed
tree: e290b9019629a0148ad549847fbd214edd8086bf
  1. res/
  2. src/
  3. tests/
  4. proguard.flags