Add newlines to the end of files where they were missing

media/base/audio_hash_unittest.cc

 // Copyright 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/logging.h"
 #include "media/base/audio_bus.h"
 #include "media/base/audio_hash.h"
 #include "media/base/fake_audio_render_callback.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
@@ skipping 146 matching lines @@
 
   // Twiddle the values too much...
   for (int i = 0; i < bus_one_->frames(); ++i)
     channel[i] += 0.0001f;
 
   AudioHash hash_three;
   hash_three.Update(bus_one_.get(), bus_one_->frames());
   EXPECT_NE(hash_one.ToString(), hash_three.ToString());
 }
 
-}  // namespace media
+}  // namespace media