Standardize usage of virtual/override/final specifiers in content/.

content/browser/dom_storage/dom_storage_task_runner.h

 // Copyright 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.
 
 #ifndef CONTENT_BROWSER_DOM_STORAGE_DOM_STORAGE_TASK_RUNNER_
 #define CONTENT_BROWSER_DOM_STORAGE_DOM_STORAGE_TASK_RUNNER_
 
 #include "base/memory/ref_counted.h"
 #include "base/sequenced_task_runner.h"
 #include "base/threading/sequenced_worker_pool.h"
@@ skipping 18 matching lines @@
 class CONTENT_EXPORT DOMStorageTaskRunner
     : public base::TaskRunner {
  public:
   enum SequenceID {
     PRIMARY_SEQUENCE,
     COMMIT_SEQUENCE
   };
 
   // The PostTask() and PostDelayedTask() methods defined by TaskRunner
   // post shutdown-blocking tasks on the primary sequence.
-  virtual bool PostDelayedTask(
-      const tracked_objects::Location& from_here,
-      const base::Closure& task,
-      base::TimeDelta delay) = 0;
+  bool PostDelayedTask(const tracked_objects::Location& from_here,
+                       const base::Closure& task,
+                       base::TimeDelta delay) override = 0;
 
   // Posts a shutdown blocking task to |sequence_id|.
   virtual bool PostShutdownBlockingTask(
       const tracked_objects::Location& from_here,
       SequenceID sequence_id,
       const base::Closure& task) = 0;
 
   // The TaskRunner override returns true if the current thread is running
   // on the primary sequence.
   bool RunsTasksOnCurrentThread() const override;
@@ skipping 69 matching lines @@
  protected:
   ~MockDOMStorageTaskRunner() override;
 
  private:
   const scoped_refptr<base::MessageLoopProxy> message_loop_;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_DOM_STORAGE_DOM_STORAGE_TASK_RUNNER_