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

chrome/browser/chromeos/cros/network_library_impl_stub.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_stub.h"
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/stl_util.h"
 #include "chrome/browser/chromeos/cros/native_network_constants.h"
@@ skipping 669 matching lines @@
     const std::string& carrier,
     const NetworkOperationCallback& completed) {
   // Call the completed callback with a 10s delay.
   BrowserThread::PostDelayedTask(
       BrowserThread::UI,
       FROM_HERE,
       base::Bind(completed, "", NETWORK_METHOD_ERROR_NONE,""),
       base::TimeDelta::FromMilliseconds(10000));
 }
 
+void NetworkLibraryImplStub::ResetModem() {
+}
+
 bool NetworkLibraryImplStub::IsCellularAlwaysInRoaming() {
   return false;
 }
 
 void NetworkLibraryImplStub::RequestNetworkScan() {
   // This is triggered by user interaction, so set a network connect delay.
   const int kScanDelayMs = 2 * 1000;
   wifi_scanning_ = true;
   BrowserThread::PostDelayedTask(
       BrowserThread::UI, FROM_HERE,
@@ skipping 101 matching lines @@
   }
   callback.Run(service_path, dictionary.get());
 }
 
 const std::map<std::string, base::DictionaryValue*>&
 NetworkLibraryImplStub::GetConfigurations() {
   return service_configurations_;
 }
 
 }  // namespace chromeos