Bug 1641090, part 6 - Make ReplaceWithID compatible with nsTHashtable's Put. r=nika

This method is the same as Put(), except that it asserts that the item
is not already present. It also puts the key second. Make it compatible
by hoisting out the assert and reversing the arguments. We can use the
definition of Put() defined in an earlier patch.

Differential Revision: https://phabricator.services.mozilla.com/D77167

ipc/chromium/src/base/id_map.h

@@ -47,11 +47,6 @@ class IDMap {
     }
   }
 
-  void ReplaceWithID(const T& data, int32_t id) {
-    MOZ_ASSERT(Contains(id), "Only replace an existing ID");
-    data_[id] = data;
-  }
-
   void Clear() { data_.clear(); }
 
   T Lookup(int32_t id) const {

ipc/glue/ProtocolUtils.cpp

@@ -867,7 +867,8 @@ void IToplevelProtocol::ReplaceEventTargetForActor(
   MOZ_RELEASE_ASSERT(id != kNullActorId && id != kFreedActorId);
 
   MutexAutoLock lock(mEventTargetMutex);
-  mEventTargetMap.ReplaceWithID(aEventTarget, id);
+  MOZ_ASSERT(mEventTargetMap.Contains(id), "Only replace an existing ID");
+  mEventTargetMap.Put(id, aEventTarget);
 }
 
 }  // namespace ipc