Replace OVERRIDE->override and FINAL->final since we now require C++11.

test/unittests/base/platform/platform-unittest.cc

 // Copyright 2014 the V8 project 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 "src/base/platform/platform.h"
 
 #if V8_OS_POSIX
 #include <unistd.h>  // NOLINT
 #endif
 
@@ skipping 31 matching lines @@
     for (size_t i = 0; i < arraysize(keys_); ++i) {
       keys_[i] = Thread::CreateThreadLocalKey();
     }
   }
   ~ThreadLocalStorageTest() {
     for (size_t i = 0; i < arraysize(keys_); ++i) {
       Thread::DeleteThreadLocalKey(keys_[i]);
     }
   }
 
-  void Run() FINAL {
+  void Run() final {
     for (size_t i = 0; i < arraysize(keys_); i++) {
       CHECK(!Thread::HasThreadLocal(keys_[i]));
     }
     for (size_t i = 0; i < arraysize(keys_); i++) {
       Thread::SetThreadLocal(keys_[i], GetValue(i));
     }
     for (size_t i = 0; i < arraysize(keys_); i++) {
       CHECK(Thread::HasThreadLocal(keys_[i]));
     }
     for (size_t i = 0; i < arraysize(keys_); i++) {
@@ skipping 28 matching lines @@
 
 
 TEST_F(ThreadLocalStorageTest, DoTest) {
   Run();
   Start();
   Join();
 }
 
 }  // namespace base
 }  // namespace v8