Fix a bunch of IWYU violators that don't include scoped_ptr.h

remoting/host/linux/audio_pipe_reader_unittest.cc

 // Copyright 2014 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 "remoting/host/linux/audio_pipe_reader.h"
 
 #include <sys/stat.h>
 #include <sys/types.h>
 #include <unistd.h>
 
 #include "base/files/file.h"
 #include "base/files/scoped_temp_dir.h"
 #include "base/macros.h"
+#include "base/memory/scoped_ptr.h"
 #include "base/message_loop/message_loop.h"
 #include "base/run_loop.h"
 #include "base/threading/thread.h"
 #include "base/time/time.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace remoting {
 
 class AudioPipeReaderTest : public testing::Test,
                             public AudioPipeReader::StreamObserver {
@@ skipping 87 matching lines @@
 
   base::TimeTicks start_time = base::TimeTicks::Now();
   ASSERT_NO_FATAL_FAILURE(WriteAndWait(test_data));
   base::TimeDelta time_passed = base::TimeTicks::Now() - start_time;
 
   EXPECT_EQ(test_data, read_data_);
   EXPECT_GE(time_passed, base::TimeDelta::FromMilliseconds(500));
 }
 
 }  // namespace remoting