Bug 1350641 - Fix MessageChannel::ShouldContinueFromTimeout to check MOZ_DEBUG_CHILD_PAUSE. r=jimm

MozReview-Commit-ID: IKqzrzoaOa9

ipc/glue/MessageChannel.cpp

@@ -2119,7 +2119,10 @@ MessageChannel::ShouldContinueFromTimeout()
     static enum { UNKNOWN, NOT_DEBUGGING, DEBUGGING } sDebuggingChildren = UNKNOWN;
 
     if (sDebuggingChildren == UNKNOWN) {
-        sDebuggingChildren = getenv("MOZ_DEBUG_CHILD_PROCESS") ? DEBUGGING : NOT_DEBUGGING;
+        sDebuggingChildren = getenv("MOZ_DEBUG_CHILD_PROCESS") ||
+                             getenv("MOZ_DEBUG_CHILD_PAUSE")
+                               ? DEBUGGING
+                               : NOT_DEBUGGING;
     }
     if (sDebuggingChildren == DEBUGGING) {
         return true;