GitLab

When a RenderProcessHost exits clearly or crashes, all of its
PeerConnections should be considered as removed.

Bug: 775415, 805398, 808402
Change-Id: I223e6e867758ef05d896608fbdcc3bc824238dd8
Reviewed-on: https://chromium-review.googlesource.com/899348
Commit-Queue: Elad Alon <eladalon@chromium.org>
Reviewed-by: Guido Urdaneta <guidou@chromium.org>
Cr-Commit-Position: refs/heads/master@{#534840}