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

chrome/browser/extensions/api/image_writer_private/operation_manager_unittest.cc

Index: chrome/browser/extensions/api/image_writer_private/operation_manager_unittest.cc
diff --git a/chrome/browser/extensions/api/image_writer_private/operation_manager_unittest.cc b/chrome/browser/extensions/api/image_writer_private/operation_manager_unittest.cc
index 3bd520069c24efc0366828e22bf080a1b72ab1bc..243048f146a0ef566fc43097791f56372bb1f6c2 100644
--- a/chrome/browser/extensions/api/image_writer_private/operation_manager_unittest.cc
+++ b/chrome/browser/extensions/api/image_writer_private/operation_manager_unittest.cc
@@ -29,7 +29,7 @@ class FakeEventRouter : public extensions::EventRouter {
 
   virtual void DispatchEventToExtension(
       const std::string& extension_id,
-      scoped_ptr<extensions::Event> event) OVERRIDE {
+      scoped_ptr<extensions::Event> event) override {
     // Do nothing with the event as no tests currently care.
   }
 };
@@ -42,7 +42,7 @@ class FakeExtensionSystem : public extensions::TestExtensionSystem {
     fake_event_router_.reset(new FakeEventRouter(profile));
   }
 
-  virtual EventRouter* event_router() OVERRIDE {
+  virtual EventRouter* event_router() override {
     return fake_event_router_.get();
   }
 
@@ -77,7 +77,7 @@ class ImageWriterOperationManagerTest : public ImageWriterUnitTestBase {
         start_success_(false) {
   }
 
-  virtual void SetUp() OVERRIDE {
+  virtual void SetUp() override {
     ImageWriterUnitTestBase::SetUp();
     extension_system_ = static_cast<FakeExtensionSystem*>(
         ExtensionSystemFactory::GetInstance()->