Update from https://crrev.com/309717

gpu/command_buffer/service/valuebuffer_manager_unittest.cc

 // Copyright (c) 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 "gpu/command_buffer/service/valuebuffer_manager.h"
 
 #include "base/memory/scoped_ptr.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/string_util.h"
 #include "gpu/command_buffer/common/gles2_cmd_format.h"
@@ skipping 14 matching lines @@
 
 class MockSubscriptionRefSetObserver : public SubscriptionRefSet::Observer {
  public:
   MOCK_METHOD1(OnAddSubscription, void(unsigned int target));
   MOCK_METHOD1(OnRemoveSubscription, void(unsigned int target));
 };
 
 class ValuebufferManagerTest : public GpuServiceTest {
  public:
   ValuebufferManagerTest() {}
-  ~ValuebufferManagerTest() {}
+  ~ValuebufferManagerTest() override {}
 
   void SetUp() override {
     GpuServiceTest::SetUp();
     subscription_ref_set_ = new SubscriptionRefSet();
     pending_state_map_ = new ValueStateMap();
     subscription_ref_set_->AddObserver(&mock_observer_);
     manager_.reset(new ValuebufferManager(subscription_ref_set_.get(),
                                           pending_state_map_.get()));
   }
 
@@ skipping 97 matching lines @@
   valuebuffer1->RemoveSubscription(GL_MOUSE_POSITION_CHROMIUM);
   // Ensure the manager still thinks a buffer has a reference to the
   // subscription target.
   EXPECT_CALL(mock_observer_, OnRemoveSubscription(GL_MOUSE_POSITION_CHROMIUM))
       .Times(1);
   valuebuffer2->RemoveSubscription(GL_MOUSE_POSITION_CHROMIUM);
 }
 
 }  // namespace gles2
 }  // namespace gpu