replace OVERRIDE and FINAL with override and final in chrome/browser/[j-q]*

chrome/browser/metrics/variations/variations_service.h

Index: chrome/browser/metrics/variations/variations_service.h
diff --git a/chrome/browser/metrics/variations/variations_service.h b/chrome/browser/metrics/variations/variations_service.h
index 108d621dbde88993ef1fd273fd7d5a3b7d5c0ce5..02933963c93a942bf6f2a11ee46710b198b2c98e 100644
--- a/chrome/browser/metrics/variations/variations_service.h
+++ b/chrome/browser/metrics/variations/variations_service.h
@@ -168,10 +168,10 @@ class VariationsService
       const variations::VariationsSeedSimulator::Result& result);
 
   // net::URLFetcherDelegate implementation:
-  virtual void OnURLFetchComplete(const net::URLFetcher* source) OVERRIDE;
+  virtual void OnURLFetchComplete(const net::URLFetcher* source) override;
 
   // ResourceRequestAllowedNotifier::Observer implementation:
-  virtual void OnResourceRequestsAllowed() OVERRIDE;
+  virtual void OnResourceRequestsAllowed() override;
 
   // Performs a variations seed simulation with the given |seed| and |version|
   // and logs the simulation results as histograms.