Apply automated fixits for Chrome clang plugin to sandbox.

sandbox/win/src/address_sanitizer_test.cc

Index: sandbox/win/src/address_sanitizer_test.cc
diff --git a/sandbox/win/src/address_sanitizer_test.cc b/sandbox/win/src/address_sanitizer_test.cc
index 6eb2c85382046ef3d8d7982e6a7eed1b9be2b2e9..b88aa81cd43cb12347929962564317c37228a9b5 100644
--- a/sandbox/win/src/address_sanitizer_test.cc
+++ b/sandbox/win/src/address_sanitizer_test.cc
@@ -18,12 +18,12 @@ namespace sandbox {
 
 class AddressSanitizerTests : public ::testing::Test {
  public:
-  void SetUp() {
+  void SetUp() override {
     env_.reset(base::Environment::Create());
     had_asan_options_ = env_->GetVar("ASAN_OPTIONS", &old_asan_options_);
   }
 
-  void TearDown() {
+  void TearDown() override {
     if (had_asan_options_)
       ASSERT_TRUE(env_->SetVar("ASAN_OPTIONS", old_asan_options_));
     else