[cros] Add network tray item for mobile network setup.

chrome/browser/chromeos/cros/network_library.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 CHROME_BROWSER_CHROMEOS_CROS_NETWORK_LIBRARY_H_
 #define CHROME_BROWSER_CHROMEOS_CROS_NETWORK_LIBRARY_H_
 #pragma once
 
 #include <map>
 #include <string>
@@ skipping 102 matching lines @@
   const std::string& esn() const { return esn_; }
   const std::string& mdn() const { return mdn_; }
   const std::string& min() const { return min_; }
   const std::string& model_id() const { return model_id_; }
   const std::string& manufacturer() const { return manufacturer_; }
   SimLockState sim_lock_state() const { return sim_lock_state_; }
   bool is_sim_locked() const {
     return sim_lock_state_ == SIM_LOCKED_PIN ||
         sim_lock_state_ == SIM_LOCKED_PUK;
   }
+  // Returns true if GSM modem and SIM as absent, otherwise
+  // returns false: GSM modem and SIM card is present or CDMA modem.
+  bool is_sim_absent() const {
+    return technology_family() == TECHNOLOGY_FAMILY_GSM &&
+           !is_sim_locked() && imsi().empty();
+  }
   const int sim_retries_left() const { return sim_retries_left_; }
   SimPinRequire sim_pin_required() const { return sim_pin_required_; }
   const std::string& firmware_revision() const { return firmware_revision_; }
   const std::string& hardware_revision() const { return hardware_revision_; }
   const unsigned int prl_version() const { return prl_version_; }
   const std::string& home_provider_code() const { return home_provider_code_; }
   const std::string& home_provider_country() const {
     return home_provider_country_;
   }
   const std::string& home_provider_id() const { return home_provider_id_; }
@@ skipping 1514 matching lines @@
                                 const std::string& service_path) = 0;
 
   // Factory function, creates a new instance and returns ownership.
   // For normal usage, access the singleton via CrosLibrary::Get().
   static NetworkLibrary* GetImpl(bool stub);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_CROS_NETWORK_LIBRARY_H_