Enforce marking "override" for functions overriding Blink.

content/browser/android/in_process/context_provider_in_process.cc

 // Copyright (c) 2013 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 "content/browser/android/in_process/context_provider_in_process.h"
 
 #include "base/bind.h"
 #include "base/callback_helpers.h"
 #include "base/strings/stringprintf.h"
 #include "cc/output/managed_memory_policy.h"
 #include "content/common/gpu/client/grcontext_for_webgraphicscontext3d.h"
 #include "gpu/blink/webgraphicscontext3d_in_process_command_buffer_impl.h"
 #include "gpu/command_buffer/client/gles2_implementation.h"
 #include "third_party/skia/include/gpu/GrContext.h"
 
 using gpu_blink::WebGraphicsContext3DInProcessCommandBufferImpl;
 
 namespace content {
 
 class ContextProviderInProcess::LostContextCallbackProxy
     : public blink::WebGraphicsContext3D::WebGraphicsContextLostCallback {
  public:
   explicit LostContextCallbackProxy(ContextProviderInProcess* provider)
       : provider_(provider) {
     provider_->WebContext3DImpl()->setContextLostCallback(this);
   }
 
-  virtual ~LostContextCallbackProxy() {
+  ~LostContextCallbackProxy() override {
     provider_->WebContext3DImpl()->setContextLostCallback(NULL);
   }
 
-  virtual void onContextLost() {
+  void onContextLost() override {
     provider_->OnLostContext();
   }
 
  private:
   ContextProviderInProcess* provider_;
 };
 
 // static
 scoped_refptr<ContextProviderInProcess> ContextProviderInProcess::Create(
     scoped_ptr<WebGraphicsContext3DInProcessCommandBufferImpl> context3d,
@@ skipping 144 matching lines @@
 
 void ContextProviderInProcess::SetLostContextCallback(
     const LostContextCallback& lost_context_callback) {
   DCHECK(context_thread_checker_.CalledOnValidThread());
   DCHECK(lost_context_callback_.is_null() ||
          lost_context_callback.is_null());
   lost_context_callback_ = lost_context_callback;
 }
 
 }  // namespace content