C++11 override style change for athena

athena/test/base/test_resource_manager_delegate.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "athena/resource_manager/public/resource_manager_delegate.h"
 
 #include <string>
 
 #include "base/macros.h"
 
 namespace athena {
 
 namespace test {
 
 namespace {
 // This is the minimum amount of time in milliseconds between checks for
 // low memory. Since we report no memory use (and the timeout is extremely long)
 // the memory pressure event will never go off.
 const int kMemoryPressureIntervalMs = 60000;
 }  // namespace
 
 class ResourceManagerDelegateImpl : public ResourceManagerDelegate {
  public:
   ResourceManagerDelegateImpl() {}
-  virtual ~ResourceManagerDelegateImpl() {}
+  ~ResourceManagerDelegateImpl() override {}
 
  private:
-  virtual int GetUsedMemoryInPercent() override {
+  int GetUsedMemoryInPercent() override {
     return 0;
   }
 
-  virtual int MemoryPressureIntervalInMS() override {
+  int MemoryPressureIntervalInMS() override {
     return kMemoryPressureIntervalMs;
   }
   DISALLOW_COPY_AND_ASSIGN(ResourceManagerDelegateImpl);
 };
 
 }  // namespace test
 
 // static
 ResourceManagerDelegate*
 ResourceManagerDelegate::CreateResourceManagerDelegate() {
   return new test::ResourceManagerDelegateImpl;
 }
 
 }  // namespace athena