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

chrome/browser/net/pref_proxy_config_tracker_impl_unittest.cc

Index: chrome/browser/net/pref_proxy_config_tracker_impl_unittest.cc
diff --git a/chrome/browser/net/pref_proxy_config_tracker_impl_unittest.cc b/chrome/browser/net/pref_proxy_config_tracker_impl_unittest.cc
index 60fd28e7f8e13295e7825f5eb36db178ca132413..7aa7c527b41ac3b5a75cb11b00ce8560cd0d7ae0 100644
--- a/chrome/browser/net/pref_proxy_config_tracker_impl_unittest.cc
+++ b/chrome/browser/net/pref_proxy_config_tracker_impl_unittest.cc
@@ -44,17 +44,17 @@ class TestProxyConfigService : public net::ProxyConfigService {
 
  private:
   virtual void AddObserver(
-      net::ProxyConfigService::Observer* observer) OVERRIDE {
+      net::ProxyConfigService::Observer* observer) override {
     observers_.AddObserver(observer);
   }
 
   virtual void RemoveObserver(
-      net::ProxyConfigService::Observer* observer) OVERRIDE {
+      net::ProxyConfigService::Observer* observer) override {
     observers_.RemoveObserver(observer);
   }
 
   virtual net::ProxyConfigService::ConfigAvailability GetLatestProxyConfig(
-      net::ProxyConfig* config) OVERRIDE {
+      net::ProxyConfig* config) override {
     *config = config_;
     return availability_;
   }