Add ResetModem method and call it once non_cellular activation is done.

chrome/browser/chromeos/cros/network_library_impl_cros.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 "chrome/browser/chromeos/cros/network_library_impl_cros.h"
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/json/json_writer.h"  // for debug output only.
 #include "base/metrics/histogram.h"
@@ skipping 421 matching lines @@
     const std::string& carrier,
     const NetworkOperationCallback& completed) {
   const NetworkDevice* cellular = FindCellularDevice();
   if (!cellular) {
     NOTREACHED() << "Calling SetCarrier method w/o cellular device.";
     return;
   }
   CrosSetCarrier(cellular->device_path(), carrier, completed);
 }
 
+void NetworkLibraryImplCros::ResetModem() {
+  const NetworkDevice* cellular = FindCellularDevice();
+  if (!cellular) {
+    NOTREACHED() << "Calling ResetModem method w/o cellular device.";
+    return;
+  }
+  CrosReset(cellular->device_path());
+}
+
 bool NetworkLibraryImplCros::IsCellularAlwaysInRoaming() {
   const NetworkDevice* cellular = FindCellularDevice();
   if (!cellular) {
     NOTREACHED() << "Calling IsCellularAlwaysInRoaming method "
         "w/o cellular device.";
     return false;
   }
   return cellular->provider_requires_roaming();
 }
 
@@ skipping 902 matching lines @@
     RefreshIPConfig(network);
 }
 
 // static
 bool NetworkLibraryImplCros::AreProfilePathsEqual(const NetworkProfile& a,
                                                   const NetworkProfile& b) {
   return a.path == b.path;
 }
 
 }  // namespace chromeos