Add a flag to app_shell that allows roaming on cellular networks

extensions/shell/browser/shell_network_controller_chromeos.cc

 // Copyright 2014 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 "extensions/shell/browser/shell_network_controller_chromeos.h"
 
 #include "base/bind.h"
 #include "base/location.h"
 #include "base/logging.h"
 #include "base/strings/stringprintf.h"
 #include "base/time/time.h"
 #include "chromeos/network/network_connection_handler.h"
+#include "chromeos/network/network_device_handler.h"
 #include "chromeos/network/network_handler.h"
 #include "chromeos/network/network_handler_callbacks.h"
 #include "chromeos/network/network_state.h"
 #include "chromeos/network/network_state_handler.h"
 #include "third_party/cros_system_api/dbus/service_constants.h"
 
 namespace extensions {
 
 namespace {
 
@@ skipping 72 matching lines @@
 
   if (preferred_network_is_active_ ||
       (preferred_network_name_.empty() && wifi_network)) {
     SetScanningEnabled(false);
   } else {
     SetScanningEnabled(true);
     ConnectIfUnconnected();
   }
 }
 
+void ShellNetworkController::SetCellularAllowRoaming(bool allow_roaming) {
+  chromeos::NetworkDeviceHandler* device_handler =
+      chromeos::NetworkHandler::Get()->network_device_handler();
+  device_handler->SetCellularAllowRoaming(allow_roaming);
+}
+
 const chromeos::NetworkState* ShellNetworkController::GetActiveWiFiNetwork() {
   chromeos::NetworkStateHandler* state_handler =
       chromeos::NetworkHandler::Get()->network_state_handler();
   const chromeos::NetworkState* network = state_handler->FirstNetworkByType(
       chromeos::NetworkTypePattern::Primitive(shill::kTypeWifi));
   return network &&
                  (network->IsConnectedState() || network->IsConnectingState())
              ? network
              : NULL;
 }
@@ skipping 84 matching lines @@
 }
 
 void ShellNetworkController::HandleConnectionError(
     const std::string& error_name,
     scoped_ptr<base::DictionaryValue> error_data) {
   LOG(WARNING) << "Unable to connect to network: " << error_name;
   state_ = STATE_IDLE;
 }
 
 }  // namespace extensions