Standardize usage of virtual/override/final specifiers.

content/browser/service_worker/service_worker_provider_host_unittest.cc

Index: content/browser/service_worker/service_worker_provider_host_unittest.cc
diff --git a/content/browser/service_worker/service_worker_provider_host_unittest.cc b/content/browser/service_worker/service_worker_provider_host_unittest.cc
index 000cb431744f924b08499a8dd6dde8ba9c7150eb..fac7cb734abad27d3f45df220478a1ede73b3b9a 100644
--- a/content/browser/service_worker/service_worker_provider_host_unittest.cc
+++ b/content/browser/service_worker/service_worker_provider_host_unittest.cc
@@ -22,9 +22,9 @@ class ServiceWorkerProviderHostTest : public testing::Test {
  protected:
   ServiceWorkerProviderHostTest()
       : thread_bundle_(TestBrowserThreadBundle::IO_MAINLOOP) {}
-  virtual ~ServiceWorkerProviderHostTest() {}
+  ~ServiceWorkerProviderHostTest() override {}
 
-  virtual void SetUp() override {
+  void SetUp() override {
     helper_.reset(new EmbeddedWorkerTestHelper(kRenderProcessId));
     context_ = helper_->context();
     pattern_ = GURL("http://www.example.com/");
@@ -47,7 +47,7 @@ class ServiceWorkerProviderHostTest : public testing::Test {
     context_->AddProviderHost(make_scoped_ptr(host2.release()));
   }
 
-  virtual void TearDown() override {
+  void TearDown() override {
     version_ = 0;
     registration_ = 0;
     helper_.reset();