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

chrome/browser/extensions/sandboxed_unpacker_unittest.cc

Index: chrome/browser/extensions/sandboxed_unpacker_unittest.cc
diff --git a/chrome/browser/extensions/sandboxed_unpacker_unittest.cc b/chrome/browser/extensions/sandboxed_unpacker_unittest.cc
index 5ec2db965060204dfeb626c2d990a39ff405d067..ff01e8a5dc48426db454537560cba33227830b60 100644
--- a/chrome/browser/extensions/sandboxed_unpacker_unittest.cc
+++ b/chrome/browser/extensions/sandboxed_unpacker_unittest.cc
@@ -40,13 +40,13 @@ class MockSandboxedUnpackerClient : public SandboxedUnpackerClient {
                                const base::FilePath& extension_root,
                                const base::DictionaryValue* original_manifest,
                                const Extension* extension,
-                               const SkBitmap& install_icon) OVERRIDE {
+                               const SkBitmap& install_icon) override {
     temp_dir_ = temp_dir;
     quit_closure_.Run();
 
   }
 
-  virtual void OnUnpackFailure(const base::string16& error) OVERRIDE {
+  virtual void OnUnpackFailure(const base::string16& error) override {
     ASSERT_TRUE(false);
   }