Update from chromium https://crrev.com/301725/

net/base/elements_upload_data_stream_unittest.cc

Index: net/base/elements_upload_data_stream_unittest.cc
diff --git a/net/base/elements_upload_data_stream_unittest.cc b/net/base/elements_upload_data_stream_unittest.cc
index 91c390cf91d6de520126cf2aae181cd05f2e6e7c..1882e9a92247792bcd68a5f7b6e6c0f070fd4f51 100644
--- a/net/base/elements_upload_data_stream_unittest.cc
+++ b/net/base/elements_upload_data_stream_unittest.cc
@@ -125,11 +125,11 @@ class MockUploadElementReader : public UploadElementReader {
 
 class ElementsUploadDataStreamTest : public PlatformTest {
  public:
-  virtual void SetUp() {
+  void SetUp() override {
     PlatformTest::SetUp();
     ASSERT_TRUE(temp_dir_.CreateUniqueTempDir());
   }
-  virtual ~ElementsUploadDataStreamTest() {
+  ~ElementsUploadDataStreamTest() override {
     element_readers_.clear();
     base::RunLoop().RunUntilIdle();
   }