Replacing the OVERRIDE with override and FINAL with final

Source/platform/mediastream/RTCConfiguration.h

Index: Source/platform/mediastream/RTCConfiguration.h
diff --git a/Source/platform/mediastream/RTCConfiguration.h b/Source/platform/mediastream/RTCConfiguration.h
index 05682b330e40eeb4c97dda4df7b1db379d186204..ac42972e15999c6b5cf4aba2affbc82c556abff7 100644
--- a/Source/platform/mediastream/RTCConfiguration.h
+++ b/Source/platform/mediastream/RTCConfiguration.h
@@ -39,7 +39,7 @@
 
 namespace blink {
 
-class RTCIceServer FINAL : public GarbageCollectedFinalized<RTCIceServer> {
+class RTCIceServer final : public GarbageCollectedFinalized<RTCIceServer> {
 public:
     static RTCIceServer* create(const KURL& uri, const String& username, const String& credential)
     {
@@ -71,7 +71,7 @@ enum RTCIceTransports {
     RTCIceTransportsAll
 };
 
-class RTCConfiguration FINAL : public GarbageCollected<RTCConfiguration> {
+class RTCConfiguration final : public GarbageCollected<RTCConfiguration> {
 public:
     static RTCConfiguration* create() { return new RTCConfiguration(); }