icecat: add release icecat-140.8.0-2gnu1 for ecne

icecat/docshell/base/BrowsingContextGroup.h

@@ -87,6 +87,12 @@ class BrowsingContextGroup final : public nsWrapperCache {
   // BrowsingContextGroup, if possible.
   ContentParent* GetHostProcess(const nsACString& aRemoteType);
 
+  // Check if the process which sent the message being read from aReader is
+  // aware of this BrowsingContextGroup's existence.
+  // If this returns false, it will first set a fatal error on aReader with more
+  // details.
+  bool IsKnownForMessageReader(IPC::MessageReader* aReader);
+
   // When a BrowsingContext is being discarded, we may want to keep the
   // corresponding BrowsingContextGroup alive until the other process
   // acknowledges that the BrowsingContext has been discarded. A `KeepAlive`
@@ -260,9 +266,7 @@ class BrowsingContextGroup final : public nsWrapperCache {
 
   uint32_t mKeepAliveCount = 0;
 
-#ifdef MOZ_DIAGNOSTIC_ASSERT_ENABLED
   bool mDestroyed = false;
-#endif
 
   // A BrowsingContextGroup contains a series of {Browsing,Window}Context
   // objects. They are addressed using a hashtable to avoid linear lookup when