Enforce marking "override" for functions overriding Blink in components/.

components/password_manager/content/renderer/credential_manager_client_browsertest.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 "components/password_manager/content/common/credential_manager_messages.h"
 #include "components/password_manager/content/renderer/credential_manager_client.h"
 #include "content/public/test/render_view_test.h"
 #include "ipc/ipc_test_sink.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "third_party/WebKit/public/platform/WebCredential.h"
@@ skipping 87 matching lines @@
 
   scoped_ptr<blink::WebPasswordCredential> credential_;
 };
 
 class TestNotificationCallbacks
     : public blink::WebCredentialManagerClient::NotificationCallbacks {
  public:
   explicit TestNotificationCallbacks(CredentialManagerClientTest* test)
       : test_(test) {}
 
-  virtual ~TestNotificationCallbacks() {}
+  ~TestNotificationCallbacks() override {}
 
-  virtual void onSuccess() { test_->set_callback_succeeded(true); }
+  void onSuccess() override { test_->set_callback_succeeded(true); }
 
-  virtual void onError(blink::WebCredentialManagerError* reason) {
+  void onError(blink::WebCredentialManagerError* reason) override {
     test_->set_callback_errored(true);
   }
 
  private:
   CredentialManagerClientTest* test_;
 };
 
 class TestRequestCallbacks
     : public blink::WebCredentialManagerClient::RequestCallbacks {
  public:
   explicit TestRequestCallbacks(CredentialManagerClientTest* test)
       : test_(test) {}
 
-  virtual ~TestRequestCallbacks() {}
+  ~TestRequestCallbacks() override {}
 
-  virtual void onSuccess(blink::WebCredential*) {
+  void onSuccess(blink::WebCredential*) override {
     test_->set_callback_succeeded(true);
   }
 
-  virtual void onError(blink::WebCredentialManagerError* reason) {
+  void onError(blink::WebCredentialManagerError* reason) override {
     test_->set_callback_errored(true);
   }
 
  private:
   CredentialManagerClientTest* test_;
 };
 
 }  // namespace
 
 TEST_F(CredentialManagerClientTest, SendStore) {
@@ skipping 60 matching lines @@
   EXPECT_TRUE(ExtractRequestId(CredentialManagerHostMsg_RequestCredential::ID,
                                request_id));
 
   CredentialInfo info;  // Send an empty credential in response.
   client_->OnSendCredential(request_id, info);
   EXPECT_TRUE(callback_succeeded());
   EXPECT_FALSE(callback_errored());
 }
 
 }  // namespace password_manager