Use a direct include of strings headers in crypto/, dbus/, device/.

device/bluetooth/bluetooth_service_record_mac_unittest.mm

 // Copyright 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 "device/bluetooth/bluetooth_service_record_mac.h"
 
 #import <IOBluetooth/objc/IOBluetoothSDPDataElement.h>
 #import <IOBluetooth/objc/IOBluetoothSDPServiceRecord.h>
 #import <IOBluetooth/objc/IOBluetoothSDPUUID.h>
 
 #include <string>
 
 #include "base/basictypes.h"
-#include "base/string_number_conversions.h"
+#include "base/strings/string_number_conversions.h"
 #include "base/strings/sys_string_conversions.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace {
 
 const BluetoothSDPServiceAttributeID kServiceClassIDAttributeId = 0x0001;
 const BluetoothSDPServiceAttributeID kProtocolDescriptorListAttributeId =
     0x0004;
 const BluetoothSDPServiceAttributeID kServiceNameAttributeId = 0x0100;
 
@@ skipping 118 matching lines @@
   BluetoothServiceRecordMac record(GetServiceRecord(upper_case_uuid, false));
   EXPECT_EQ(kExpectedRfcommUuid, record.uuid());
 }
 
 TEST_F(BluetoothServiceRecordMacTest, InvalidUuid) {
   BluetoothServiceRecordMac record(GetServiceRecord(nil, false));
   EXPECT_EQ("", record.uuid());
 }
 
 }  // namespace device