Backed out changeset 3e9cc0ba5dfb (bug 1066812) for suspicion of causing B2G Nuwa mochitest crashes on a CLOSED TREE.

dom/ipc/ContentChild.cpp

@@ -615,10 +615,6 @@ ContentChild::Init(MessageLoop* aIOLoop,
     // urgent messages.
     GetIPCChannel()->BlockScripts();
 
-    // If communications with the parent have broken down, take the process
-    // down so it's not hanging around.
-    GetIPCChannel()->SetAbortOnError(true);
-
 #ifdef MOZ_X11
     // Send the parent our X socket to act as a proxy reference for our X
     // resources.
@@ -2575,8 +2571,6 @@ ContentChild::RecvShutdown()
         os->NotifyObservers(this, "content-child-shutdown", nullptr);
     }
 
-    GetIPCChannel()->SetAbortOnError(false);
-
     // Ignore errors here. If this fails, the parent will kill us after a
     // timeout.
     unused << SendFinishShutdown();

ipc/glue/MessageChannel.h

@@ -88,7 +88,7 @@ class MessageChannel : HasResultCodes
 
     void SetAbortOnError(bool abort)
     {
-        mAbortOnError = abort;
+        mAbortOnError = true;
     }
 
     // Misc. behavioral traits consumers can request for this channel