--- a/dom/ipc/ContentParent.cpp
+++ b/dom/ipc/ContentParent.cpp
@@ -2154,70 +2154,16 @@ ContentParent::~ContentParent()
   if (IsForJSPlugin()) {
     MOZ_ASSERT(!sJSPluginContentParents ||
                !sJSPluginContentParents->Get(mJSPluginID));
   } else {
     MOZ_ASSERT(!sBrowserContentParents ||
                !sBrowserContentParents->Contains(mRemoteType) ||
                !sBrowserContentParents->Get(mRemoteType)->Contains(this));
   }
-#ifdef NIGHTLY_BUILD
-  MessageChannel* channel = GetIPCChannel();
-
-  if (channel && !channel->Unsound_IsClosed()) {
-    nsString friendlyName;
-    FriendlyName(friendlyName, false);
-
-    AddRef();
-    nsrefcnt refcnt = Release();
-    uint32_t numQueuedMessages = 0;
-    numQueuedMessages = channel->Unsound_NumQueuedMessages();
-
-    nsPrintfCString msg("queued-ipc-messages/content-parent"
-                        "(%s, pid=%d, %s, 0x%p, refcnt=%" PRIuPTR
-                        ", numQueuedMessages=%d, remoteType=%s, "
-                        "mCalledClose=%s, mCalledKillHard=%s, "
-                        "mShutdownPending=%s, mIPCOpen=%s)",
-                        NS_ConvertUTF16toUTF8(friendlyName).get(),
-                        Pid(), "open channel",
-                        static_cast<nsIContentParent*>(this), refcnt,
-                        numQueuedMessages,
-                        NS_ConvertUTF16toUTF8(mRemoteType).get(),
-                        mCalledClose ? "true" : "false",
-                        mCalledKillHard ? "true" : "false",
-                        mShutdownPending ? "true" : "false",
-                        mIPCOpen ? "true" : "false");
-    CrashReporter::AnnotateCrashReport(NS_LITERAL_CSTRING("IPCFatalErrorMsg"),
-                                       msg);
-    switch (channel->GetChannelState__TotallyRacy()) {
-        case ChannelOpening:
-            MOZ_CRASH("MessageChannel destroyed without being closed " \
-                      "(mChannelState == ChannelOpening).");
-            break;
-        case ChannelConnected:
-            MOZ_CRASH("MessageChannel destroyed without being closed " \
-                      "(mChannelState == ChannelConnected).");
-            break;
-        case ChannelTimeout:
-            MOZ_CRASH("MessageChannel destroyed without being closed " \
-                      "(mChannelState == ChannelTimeout).");
-            break;
-        case ChannelClosing:
-            MOZ_CRASH("MessageChannel destroyed without being closed " \
-                      "(mChannelState == ChannelClosing).");
-            break;
-        case ChannelError:
-            MOZ_CRASH("MessageChannel destroyed without being closed " \
-                      "(mChannelState == ChannelError).");
-            break;
-        default:
-            MOZ_CRASH("MessageChannel destroyed without being closed.");
-    }
-  }
-#endif
 }
 
 void
 ContentParent::InitInternal(ProcessPriority aInitialPriority)
 {
   Telemetry::Accumulate(Telemetry::CONTENT_PROCESS_LAUNCH_TIME_MS,
                         static_cast<uint32_t>((TimeStamp::Now() - mLaunchTS)
                                               .ToMilliseconds()));