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

chromeos/disks/disk_mount_manager.h

 // Copyright (c) 2012 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.
 
 #ifndef CHROMEOS_DISKS_DISK_MOUNT_MANAGER_H_
 #define CHROMEOS_DISKS_DISK_MOUNT_MANAGER_H_
 
 #include <stdint.h>
 
 #include <map>
@@ skipping 55 matching lines @@
          const std::string& fs_uuid,
          const std::string& system_path_prefix,
          DeviceType device_type,
          uint64_t total_size_in_bytes,
          bool is_parent,
          bool is_read_only,
          bool has_media,
          bool on_boot_device,
          bool on_removable_device,
          bool is_hidden);
+    Disk(const Disk& other);
     ~Disk();
 
     // The path of the device, used by devicekit-disks.
     // (e.g. /sys/devices/pci0000:00/.../8:0:0:0/block/sdb/sdb1)
     const std::string& device_path() const { return device_path_; }
 
     // The path to the mount point of this device. Will be empty if not mounted.
     // (e.g. /media/removable/VOLUME)
     const std::string&  mount_path() const { return mount_path_; }
 
@@ skipping 220 matching lines @@
 
   // Returns a pointer to the global DiskMountManager instance.
   // Initialize() should already have been called.
   static DiskMountManager* GetInstance();
 };
 
 }  // namespace disks
 }  // namespace chromeos
 
 #endif  // CHROMEOS_DISKS_DISK_MOUNT_MANAGER_H_