Update fetch / loader classes to use OVERRIDE / FINAL when needed

Source/core/loader/FrameFetchContext.h

Index: Source/core/loader/FrameFetchContext.h
diff --git a/Source/core/loader/FrameFetchContext.h b/Source/core/loader/FrameFetchContext.h
index 93ef2207a99081bf3b53d6498431c48aa0dc384a..199147bf4a556ffb995a558e8b91a7be2435fe57 100644
--- a/Source/core/loader/FrameFetchContext.h
+++ b/Source/core/loader/FrameFetchContext.h
@@ -46,14 +46,14 @@ class ResourceLoader;
 class ResourceResponse;
 class ResourceRequest;
 
-class FrameFetchContext  : public FetchContext {
+class FrameFetchContext FINAL : public FetchContext {
 public:
     static PassOwnPtr<FrameFetchContext> create(Frame* frame) { return adoptPtr(new FrameFetchContext(frame)); }
 
     virtual void reportLocalLoadFailed(const KURL&) OVERRIDE;
     virtual void addAdditionalRequestHeaders(Document*, ResourceRequest&, FetchResourceType) OVERRIDE;
     virtual CachePolicy cachePolicy(Document*) const OVERRIDE;
-    virtual void dispatchDidChangeResourcePriority(unsigned long identifier, ResourceLoadPriority);
+    virtual void dispatchDidChangeResourcePriority(unsigned long identifier, ResourceLoadPriority) OVERRIDE;
     virtual void dispatchWillSendRequest(DocumentLoader*, unsigned long identifier, ResourceRequest&, const ResourceResponse& redirectResponse, const FetchInitiatorInfo& = FetchInitiatorInfo()) OVERRIDE;
     virtual void dispatchDidLoadResourceFromMemoryCache(const ResourceRequest&, const ResourceResponse&) OVERRIDE;
     virtual void dispatchDidReceiveResponse(DocumentLoader*, unsigned long identifier, const ResourceResponse&, ResourceLoader* = 0) OVERRIDE;