Use a direct include of strings headers in chromeos/.

chromeos/network/device_state.cc

 // 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.
 
 #include "chromeos/network/device_state.h"
 
 #include "base/logging.h"
-#include "base/stringprintf.h"
+#include "base/strings/stringprintf.h"
 #include "base/values.h"
 #include "third_party/cros_system_api/dbus/service_constants.h"
 
 namespace chromeos {
 
 DeviceState::DeviceState(const std::string& path)
     : ManagedState(MANAGED_TYPE_DEVICE, path),
       provider_requires_roaming_(false),
       support_network_scan_(false),
       scanning_(false),
@@ skipping 53 matching lines @@
     return GetBooleanValue(key, value, &sim_present_);
   }
   return false;
 }
 
 bool DeviceState::IsSimAbsent() const {
   return technology_family_ == flimflam::kTechnologyFamilyGsm && !sim_present_;
 }
 
 }  // namespace chromeos