chromeos: Add out-of-line copy ctors for complex classes.

chromeos/audio/audio_device.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 "chromeos/audio/audio_device.h"
 
 #include <stdint.h>
 
 #include "base/format_macros.h"
 #include "base/strings/string_number_conversions.h"
@@ skipping 114 matching lines @@
     display_name = node.name;
   else
     display_name = node.device_name;
   device_name = node.device_name;
   mic_positions = node.mic_positions;
   priority = GetDevicePriority(type, node.is_input);
   active = node.active;
   plugged_time = node.plugged_time;
 }
 
+AudioDevice::AudioDevice(const AudioDevice& other) = default;
+
 std::string AudioDevice::ToString() const {
   std::string result;
   base::StringAppendF(&result,
                       "is_input = %s ",
                       is_input ? "true" : "false");
   base::StringAppendF(&result,
                       "id = 0x%" PRIx64 " ",
                       id);
   base::StringAppendF(&result,
                       "stable_device_id = 0x%" PRIx64 " ",
@@ skipping 12 matching lines @@
                       active ? "true" : "false");
   base::StringAppendF(&result,
                       "plugged_time= %s ",
                       base::Uint64ToString(plugged_time).c_str());
   base::StringAppendF(&result, "mic_positions = %s ", mic_positions.c_str());
 
   return result;
 }
 
 }  // namespace chromeos