Add OVERRIDE to chrome/browser/chromeos/.

chrome/browser/chromeos/dbus/proxy_resolution_service_provider.h

Index: chrome/browser/chromeos/dbus/proxy_resolution_service_provider.h
diff --git a/chrome/browser/chromeos/dbus/proxy_resolution_service_provider.h b/chrome/browser/chromeos/dbus/proxy_resolution_service_provider.h
index 8fc0635fc3c1311b8116e9449fbebdd3554c5428..5a26358d92b356151c4296339236b088a41806d1 100644
--- a/chrome/browser/chromeos/dbus/proxy_resolution_service_provider.h
+++ b/chrome/browser/chromeos/dbus/proxy_resolution_service_provider.h
@@ -8,6 +8,7 @@
 
 #include <string>
 
+#include "base/compiler_specific.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
@@ -80,7 +81,8 @@ class ProxyResolutionServiceProvider
   virtual ~ProxyResolutionServiceProvider();
 
   // CrosDBusService::ServiceProviderInterface override.
-  virtual void Start(scoped_refptr<dbus::ExportedObject> exported_object);
+  virtual void Start(
+      scoped_refptr<dbus::ExportedObject> exported_object) OVERRIDE;
 
   // Creates the instance.
   static ProxyResolutionServiceProvider* Create();