Switch to standard integer types in media/, take 2.

media/audio/audio_streams_tracker_unittest.cc

 // Copyright 2015 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 "media/audio/audio_streams_tracker.h"
 
+#include <stddef.h>
+
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace media {
 
 TEST(AudioStreamsTrackerTest, IncreaseAndDecreaseOnce) {
   AudioStreamsTracker audio_streams_tracker;
   const size_t kNumberOfOperations = 5;
 
   // Increase count.
   for (size_t i = 1; i <= kNumberOfOperations; ++i) {
@@ skipping 73 matching lines @@
     EXPECT_EQ(2 * kNumberOfOperations,
               audio_streams_tracker.max_stream_count());
   }
 
   // Reset and check max count.
   audio_streams_tracker.ResetMaxStreamCount();
   EXPECT_EQ(0u, audio_streams_tracker.max_stream_count());
 }
 
 }  // namespace media