Standardize usage of virtual/override/final specifiers.

content/browser/service_worker/service_worker_url_request_job_unittest.cc

Index: content/browser/service_worker/service_worker_url_request_job_unittest.cc
diff --git a/content/browser/service_worker/service_worker_url_request_job_unittest.cc b/content/browser/service_worker/service_worker_url_request_job_unittest.cc
index 3668351d5e623ecdf67c77b261f46db3c2dc92d1..76f718e27dc970dda2ac60ee9fcfe03a470f28f7 100644
--- a/content/browser/service_worker/service_worker_url_request_job_unittest.cc
+++ b/content/browser/service_worker/service_worker_url_request_job_unittest.cc
@@ -96,9 +96,9 @@ class ServiceWorkerURLRequestJobTest : public testing::Test {
   ServiceWorkerURLRequestJobTest()
       : thread_bundle_(TestBrowserThreadBundle::IO_MAINLOOP),
         blob_data_(new storage::BlobData("blob-id:myblob")) {}
-  virtual ~ServiceWorkerURLRequestJobTest() {}
+  ~ServiceWorkerURLRequestJobTest() override {}
 
-  virtual void SetUp() override {
+  void SetUp() override {
     browser_context_.reset(new TestBrowserContext);
     SetUpWithHelper(new EmbeddedWorkerTestHelper(kProcessID));
   }
@@ -141,7 +141,7 @@ class ServiceWorkerURLRequestJobTest : public testing::Test {
     helper_->context()->AddProviderHost(provider_host.Pass());
   }
 
-  virtual void TearDown() override {
+  void TearDown() override {
     version_ = NULL;
     registration_ = NULL;
     helper_.reset();