Standardize usage of virtual/override/final specifiers.

remoting/base/compound_buffer_unittest.cc

 // Copyright (c) 2011 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 <string>
 
 #include "base/bind.h"
 #include "base/callback.h"
 #include "base/memory/scoped_ptr.h"
 #include "net/base/io_buffer.h"
@@ skipping 55 matching lines @@
 
   void TestCropBack(int pos, int size) {
     CompoundBuffer cropped;
     cropped.CopyFrom(target_, 0, target_.total_bytes());
     cropped.CropBack(pos);
     EXPECT_TRUE(CompareData(cropped, data_->data(),
                             target_.total_bytes() - pos));
   }
 
  protected:
-  virtual void SetUp() {
+  void SetUp() override {
     data_ = new IOBuffer(kDataSize);
     for (int i = 0; i < kDataSize; ++i) {
       data_->data()[i] = i;
     }
   }
 
   // Iterate over chunks of data with sizes specified in |sizes| in the
   // interval [0..kDataSize]. |function| is called for each chunk.
   void IterateOverPieces(const int sizes[],
                          const base::Callback<void(int, int)>& function) {
@@ skipping 182 matching lines @@
   ReadString(&stream, "MultipleArrayInput");
   EXPECT_TRUE(stream.Skip(6));
   ReadString(&stream, "f");
   ReadString(&stream, "o");
   ReadString(&stream, "r");
   ReadString(&stream, " ");
   ReadString(&stream, "Chromoting");
 }
 
 }  // namespace remoting