--- a/dom/media/eme/MediaKeys.h
+++ b/dom/media/eme/MediaKeys.h
@@ -128,17 +128,17 @@ public:
   // Returns true if this MediaKeys has been bound to a media element.
   bool IsBoundToMediaElement() const;
 
   void GetSessionsInfo(nsString& sessionsInfo);
 
 private:
 
   // Instantiate CDMProxy instance.
-  // It could be MediaDrmCDMProxy (Widevine on Fennec) or GMPCDMProxy (the rest).
+  // It could be MediaDrmCDMProxy (Widevine on Fennec) or ChromiumCDMProxy (the rest).
   already_AddRefed<CDMProxy> CreateCDMProxy(nsIEventTarget* aMainThread);
 
   // Removes promise from mPromises, and returns it.
   already_AddRefed<DetailedPromise> RetrievePromise(PromiseId aId);
 
   // Owning ref to proxy. The proxy has a weak reference back to the MediaKeys,
   // and the MediaKeys destructor clears the proxy's reference to the MediaKeys.
   RefPtr<CDMProxy> mProxy;

--- a/dom/media/gmp/ChromiumCDMProxy.h
+++ b/dom/media/gmp/ChromiumCDMProxy.h
@@ -125,9 +125,9 @@ private:
   Mutex mCDMMutex;
   RefPtr<gmp::ChromiumCDMParent> mCDM;
   RefPtr<AbstractThread> mGMPThread;
   UniquePtr<ChromiumCDMCallbackProxy> mCallback;
 };
 
 } // namespace mozilla
 
-#endif // GMPCDMProxy_h_
+#endif // ChromiumCDMProxy_h_