Standardize usage of virtual/override/final specifiers.

content/renderer/media/user_media_client_impl_unittest.cc

Index: content/renderer/media/user_media_client_impl_unittest.cc
diff --git a/content/renderer/media/user_media_client_impl_unittest.cc b/content/renderer/media/user_media_client_impl_unittest.cc
index 02fcfe098ad3aebd4a535fb78ff7da186061fc87..35c41a064cd95929646141c3afd66e8c6c958b66 100644
--- a/content/renderer/media/user_media_client_impl_unittest.cc
+++ b/content/renderer/media/user_media_client_impl_unittest.cc
@@ -160,7 +160,7 @@ class UserMediaClientImplUnderTest : public UserMediaClientImpl {
 
 class UserMediaClientImplTest : public ::testing::Test {
  public:
-  virtual void SetUp() {
+  void SetUp() override {
     // Create our test object.
     child_process_.reset(new ChildProcess());
     dependency_factory_.reset(new MockPeerConnectionDependencyFactory());
@@ -170,7 +170,7 @@ class UserMediaClientImplTest : public ::testing::Test {
         scoped_ptr<MediaStreamDispatcher>(ms_dispatcher_).Pass()));
   }
 
-  virtual void TearDown() override {
+  void TearDown() override {
     used_media_impl_.reset();
     blink::WebHeap::collectAllGarbageForTesting();
   }