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

chromeos/dbus/shill_device_client_unittest.cc

Index: chromeos/dbus/shill_device_client_unittest.cc
diff --git a/chromeos/dbus/shill_device_client_unittest.cc b/chromeos/dbus/shill_device_client_unittest.cc
index 2a40a1fb353de0b96ee7fd0b86f426a95ae17588..d8f127a7e4319495dbacd9a1776ee7d41ad639a3 100644
--- a/chromeos/dbus/shill_device_client_unittest.cc
+++ b/chromeos/dbus/shill_device_client_unittest.cc
@@ -392,4 +392,23 @@ TEST_F(ShillDeviceClientTest, SetCarrier) {
   message_loop_.RunUntilIdle();
 }
 
+TEST_F(ShillDeviceClientTest, Reset) {
+  // Create response.
+  scoped_ptr<dbus::Response> response(dbus::Response::CreateEmpty());
+
+  // Set expectations.
+  MockClosure mock_closure;
+  MockErrorCallback mock_error_callback;
+  PrepareForMethodCall(shill::kResetFunction,
+                       base::Bind(&ExpectNoArgument),
+                       response.get());
+  EXPECT_CALL(mock_closure, Run()).Times(1);
+  // Call method.
+  client_->Reset(dbus::ObjectPath(kExampleDevicePath),
+                 mock_closure.GetCallback(),
+                 mock_error_callback.GetCallback());
+  // Run the message loop.
+  message_loop_.RunUntilIdle();
+}
+
 }  // namespace chromeos