arc-bridge: Restart ARC instance on crash

components/arc/arc_bridge_bootstrap.cc

Index: components/arc/arc_bridge_bootstrap.cc
diff --git a/components/arc/arc_bridge_bootstrap.cc b/components/arc/arc_bridge_bootstrap.cc
index ce1c513c6c981905fa2db55e468a73746c9d461f..204bf7c0780e77a945dc3696a06969fe5350dd9b 100644
--- a/components/arc/arc_bridge_bootstrap.cc
+++ b/components/arc/arc_bridge_bootstrap.cc
@@ -57,6 +57,11 @@ class ArcBridgeBootstrapImpl : public ArcBridgeBootstrap {
   // STOPPING
   //   StopInstance() ->
   // STOPPED
+  //
+  // When the instance crashes while it was ready, it will be stopped:
+  //   READY -> STOPPING -> STOPPED
+  // and then restarted:
+  //   STOPPED -> SOCKET_CREATING -> ... -> READY).
   enum class State {
     // ARC is not currently running.
     STOPPED,