Standardize usage of virtual/override/final in content/browser/

content/browser/browser_thread_impl.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 "content/browser/browser_thread_impl.h"
 
 #include <string>
 
 #include "base/atomicops.h"
 #include "base/bind.h"
@@ skipping 27 matching lines @@
 
 // An implementation of MessageLoopProxy to be used in conjunction
 // with BrowserThread.
 class BrowserThreadMessageLoopProxy : public base::MessageLoopProxy {
  public:
   explicit BrowserThreadMessageLoopProxy(BrowserThread::ID identifier)
       : id_(identifier) {
   }
 
   // MessageLoopProxy implementation.
-  virtual bool PostDelayedTask(
-      const tracked_objects::Location& from_here,
-      const base::Closure& task, base::TimeDelta delay) override {
+  bool PostDelayedTask(const tracked_objects::Location& from_here,
+                       const base::Closure& task,
+                       base::TimeDelta delay) override {
     return BrowserThread::PostDelayedTask(id_, from_here, task, delay);
   }
 
-  virtual bool PostNonNestableDelayedTask(
-      const tracked_objects::Location& from_here,
-      const base::Closure& task,
-      base::TimeDelta delay) override {
+  bool PostNonNestableDelayedTask(const tracked_objects::Location& from_here,
+                                  const base::Closure& task,
+                                  base::TimeDelta delay) override {
     return BrowserThread::PostNonNestableDelayedTask(id_, from_here, task,
                                                      delay);
   }
 
-  virtual bool RunsTasksOnCurrentThread() const override {
+  bool RunsTasksOnCurrentThread() const override {
     return BrowserThread::CurrentlyOn(id_);
   }
 
  protected:
-  virtual ~BrowserThreadMessageLoopProxy() {}
+  ~BrowserThreadMessageLoopProxy() override {}
 
  private:
   BrowserThread::ID id_;
   DISALLOW_COPY_AND_ASSIGN(BrowserThreadMessageLoopProxy);
 };
 
 // A separate helper is used just for the proxies, in order to avoid needing
 // to initialize the globals to create a proxy.
 struct BrowserThreadProxies {
   BrowserThreadProxies() {
@@ skipping 454 matching lines @@
   AtomicWord* storage = reinterpret_cast<AtomicWord*>(
       &globals.thread_delegates[identifier]);
   AtomicWord old_pointer = base::subtle::NoBarrier_AtomicExchange(
       storage, reinterpret_cast<AtomicWord>(delegate));
 
   // This catches registration when previously registered.
   DCHECK(!delegate || !old_pointer);
 }
 
 }  // namespace content