Convert //tools to use std::unique_ptr

tools/battor_agent/battor_finder.cc

 // Copyright 2016 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 "tools/battor_agent/battor_finder.h"
 
 #include "base/command_line.h"
 #include "base/logging.h"
 #include "device/serial/serial.mojom.h"
 #include "device/serial/serial_device_enumerator.h"
 #include "mojo/public/cpp/bindings/array.h"
 
 namespace battor {
 
 namespace {
 
 // The USB display name prefix that all BattOrs have.
 const char kBattOrDisplayNamePrefix[] = "BattOr";
 
 // The command line switch used to hard-code a BattOr path. Hard-coding
 // this path disables the normal method of finding a BattOr, which is to
 // search through serial devices for one with a matching display name.
 const char kBattOrPathSwitch[] = "battor-path";
 
 }  // namespace
 
 std::string BattOrFinder::FindBattOr() {
-  scoped_ptr<device::SerialDeviceEnumerator> serial_device_enumerator =
+  std::unique_ptr<device::SerialDeviceEnumerator> serial_device_enumerator =
       device::SerialDeviceEnumerator::Create();
 
   mojo::Array<device::serial::DeviceInfoPtr> devices =
       serial_device_enumerator->GetDevices();
 
   std::string switch_specified_path =
       base::CommandLine::ForCurrentProcess()->GetSwitchValueASCII(
           kBattOrPathSwitch);
   if (switch_specified_path.empty()) {
     // If we have no switch-specified path, look for a device with the right
@@ skipping 12 matching lines @@
     for (size_t i = 0; i < devices.size(); i++) {
       if (devices[i]->path == switch_specified_path)
         return switch_specified_path;
     }
   }
 
   return std::string();
 }
 
 }  // namespace battor