replace OVERRIDE and FINAL with override and final in base/

base/mac/libdispatch_task_runner_unittest.cc

Index: base/mac/libdispatch_task_runner_unittest.cc
diff --git a/base/mac/libdispatch_task_runner_unittest.cc b/base/mac/libdispatch_task_runner_unittest.cc
index a4f3202ac5e3f872f28b17c61f1b36f64dd1b0bb..cad0efaa48e109c919ede24192dfe1fe1852bba0 100644
--- a/base/mac/libdispatch_task_runner_unittest.cc
+++ b/base/mac/libdispatch_task_runner_unittest.cc
@@ -12,7 +12,7 @@
 
 class LibDispatchTaskRunnerTest : public testing::Test {
  public:
-  virtual void SetUp() OVERRIDE {
+  virtual void SetUp() override {
     task_runner_ = new base::mac::LibDispatchTaskRunner(
         "org.chromium.LibDispatchTaskRunnerTest");
   }