Standardize usage of virtual/override/final specifiers.

content/browser/streams/stream_unittest.cc

 // Copyright (c) 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "base/message_loop/message_loop.h"
 #include "base/test/test_simple_task_runner.h"
 #include "content/browser/streams/stream.h"
 #include "content/browser/streams/stream_read_observer.h"
 #include "content/browser/streams/stream_registry.h"
 #include "content/browser/streams/stream_write_observer.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace content {
 
 class StreamTest : public testing::Test {
  public:
   StreamTest() : producing_seed_key_(0) {}
 
-  virtual void SetUp() override {
-    registry_.reset(new StreamRegistry());
-  }
+  void SetUp() override { registry_.reset(new StreamRegistry()); }
 
   // Create a new IO buffer of the given |buffer_size| and fill it with random
   // data.
   scoped_refptr<net::IOBuffer> NewIOBuffer(size_t buffer_size) {
     scoped_refptr<net::IOBuffer> buffer(new net::IOBuffer(buffer_size));
     char *bufferp = buffer->data();
     for (size_t i = 0; i < buffer_size; i++)
       bufferp[i] = (i + producing_seed_key_) % (1 << sizeof(char));
     ++producing_seed_key_;
     return buffer;
@@ skipping 266 matching lines @@
 
   // Run loop to make |reader| consume the data.
   base::MessageLoop::current()->RunUntilIdle();
 
   writer.Write(stream.get(), buffer, kBufferSize);
 
   EXPECT_EQ(stream.get(), registry_->GetStream(url).get());
 }
 
 }  // namespace content