replace OVERRIDE and FINAL with override and final in chrome/browser/chromeos/

chrome/browser/chromeos/memory/low_memory_observer.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 "chrome/browser/chromeos/memory/low_memory_observer.h"
 
 #include <fcntl.h>
 
 #include "base/bind.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 62 matching lines @@
   void StartWatchingDescriptor();
 
   // Delegate to receive events from WatchFileDescriptor.
   class FileWatcherDelegate : public base::MessageLoopForIO::Watcher {
    public:
     explicit FileWatcherDelegate(LowMemoryObserverImpl* owner)
         : owner_(owner) {}
     virtual ~FileWatcherDelegate() {}
 
     // Overrides for base::MessageLoopForIO::Watcher
-    virtual void OnFileCanWriteWithoutBlocking(int fd) OVERRIDE {}
-    virtual void OnFileCanReadWithoutBlocking(int fd) OVERRIDE {
+    virtual void OnFileCanWriteWithoutBlocking(int fd) override {}
+    virtual void OnFileCanReadWithoutBlocking(int fd) override {
       LOG(WARNING) << "Low memory condition detected.  Discarding a tab.";
       // We can only discard tabs on the UI thread.
       base::Callback<void(void)> callback = base::Bind(&DiscardTab);
       BrowserThread::PostTask(BrowserThread::UI, FROM_HERE, callback);
       owner_->ScheduleNextObservation();
     }
 
     // Sends off a discard request to the OomPriorityManager.  Must be run on
     // the UI thread.
     static void DiscardTab() {
@@ skipping 87 matching lines @@
 
 void LowMemoryObserver::Stop() {
   BrowserThread::PostTask(
       BrowserThread::FILE,
       FROM_HERE,
       base::Bind(&LowMemoryObserverImpl::StopObservingOnFileThread,
                  observer_.get()));
 }
 
 }  // namespace chromeos