Update {virtual,override} to follow C++11 style in components.

components/policy/core/common/policy_service_impl_unittest.cc

 // Copyright (c) 2012 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 "components/policy/core/common/policy_service_impl.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/callback.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 82 matching lines @@
  private:
   MockConfigurationPolicyProvider* provider_;
   bool observer_invoked_;
 };
 
 }  // namespace
 
 class PolicyServiceTest : public testing::Test {
  public:
   PolicyServiceTest() {}
-  virtual void SetUp() override {
+  void SetUp() override {
     EXPECT_CALL(provider0_, IsInitializationComplete(_))
         .WillRepeatedly(Return(true));
     EXPECT_CALL(provider1_, IsInitializationComplete(_))
         .WillRepeatedly(Return(true));
     EXPECT_CALL(provider2_, IsInitializationComplete(_))
         .WillRepeatedly(Return(true));
 
     provider0_.Init();
     provider1_.Init();
     provider2_.Init();
 
     policy0_.Set("pre",
                  POLICY_LEVEL_MANDATORY,
                  POLICY_SCOPE_USER,
                  new base::FundamentalValue(13),
                  NULL);
     provider0_.UpdateChromePolicy(policy0_);
 
     PolicyServiceImpl::Providers providers;
     providers.push_back(&provider0_);
     providers.push_back(&provider1_);
     providers.push_back(&provider2_);
     policy_service_.reset(new PolicyServiceImpl(providers));
   }
 
-  virtual void TearDown() override {
+  void TearDown() override {
     provider0_.Shutdown();
     provider1_.Shutdown();
     provider2_.Shutdown();
   }
 
   MOCK_METHOD2(OnPolicyValueUpdated, void(const base::Value*,
                                           const base::Value*));
 
   MOCK_METHOD0(OnPolicyRefresh, void());
 
@@ skipping 593 matching lines @@
                          NULL);
 
   provider0_.UpdatePolicy(policy_bundle.Pass());
   RunUntilIdle();
 
   EXPECT_TRUE(VerifyPolicies(chrome_namespace, expected_chrome));
   EXPECT_TRUE(VerifyPolicies(extension_namespace, expected_extension));
 }
 
 }  // namespace policy