Update from https://crrev.com/304418

cc/layers/layer_unittest.cc

Index: cc/layers/layer_unittest.cc
diff --git a/cc/layers/layer_unittest.cc b/cc/layers/layer_unittest.cc
index 246a6582a79571ab6b76c6b95c26339f4041dbf6..4dfe86a4cc52126a313df43b7e9448d44e4e92d3 100644
--- a/cc/layers/layer_unittest.cc
+++ b/cc/layers/layer_unittest.cc
@@ -64,11 +64,11 @@ class LayerTest : public testing::Test {
         fake_client_(FakeLayerTreeHostClient::DIRECT_3D) {}
 
  protected:
-  virtual void SetUp() override {
+  void SetUp() override {
     layer_tree_host_.reset(new StrictMock<MockLayerTreeHost>(&fake_client_));
   }
 
-  virtual void TearDown() override {
+  void TearDown() override {
     Mock::VerifyAndClearExpectations(layer_tree_host_.get());
     EXPECT_CALL(*layer_tree_host_, SetNeedsFullTreeSync()).Times(AnyNumber());
     parent_ = nullptr;