Replace FINAL and OVERRIDE with their C++11 counterparts in Source/core/loader

Source/core/loader/TextTrackLoader.h

Index: Source/core/loader/TextTrackLoader.h
diff --git a/Source/core/loader/TextTrackLoader.h b/Source/core/loader/TextTrackLoader.h
index 0ec37e5adcef69d897f2a37fec0902d711169f1b..1e45eb995d7670062b8ff5d6e1ec0d3f69bc4b46 100644
--- a/Source/core/loader/TextTrackLoader.h
+++ b/Source/core/loader/TextTrackLoader.h
@@ -47,7 +47,7 @@ public:
     virtual void newRegionsAvailable(TextTrackLoader*) = 0;
 };
 
-class TextTrackLoader FINAL : public NoBaseWillBeGarbageCollectedFinalized<TextTrackLoader>, public ResourceOwner<RawResource>, private VTTParserClient {
+class TextTrackLoader final : public NoBaseWillBeGarbageCollectedFinalized<TextTrackLoader>, public ResourceOwner<RawResource>, private VTTParserClient {
     WTF_MAKE_NONCOPYABLE(TextTrackLoader);
     WTF_MAKE_FAST_ALLOCATED_WILL_BE_REMOVED;
 public:
@@ -70,13 +70,13 @@ public:
 
 private:
     // RawResourceClient
-    virtual void dataReceived(Resource*, const char* data, unsigned length) OVERRIDE;
-    virtual void notifyFinished(Resource*) OVERRIDE;
+    virtual void dataReceived(Resource*, const char* data, unsigned length) override;
+    virtual void notifyFinished(Resource*) override;
 
     // VTTParserClient
-    virtual void newCuesParsed() OVERRIDE;
-    virtual void newRegionsParsed() OVERRIDE;
-    virtual void fileFailedToParse() OVERRIDE;
+    virtual void newCuesParsed() override;
+    virtual void newRegionsParsed() override;
+    virtual void fileFailedToParse() override;
 
     TextTrackLoader(TextTrackLoaderClient&, Document&);