1) Add basic configuration (network connection, language, keyboard layout, timezone) setup page. 2)…

components/pairing/host_pairing_controller.h

 // 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.
 
 #ifndef COMPONENTS_PAIRING_HOST_PAIRING_CONTROLLER_H_
 #define COMPONENTS_PAIRING_HOST_PAIRING_CONTROLLER_H_
 
 #include <string>
 
 #include "base/macros.h"
 
 namespace pairing_chromeos {
 
 class HostPairingController {
  public:
   enum Stage {
     STAGE_NONE,
     STAGE_INITIALIZATION_ERROR,
     STAGE_WAITING_FOR_CONTROLLER,
     STAGE_WAITING_FOR_CODE_CONFIRMATION,
+    STAGE_SETUP_BASIC_CONFIGURATION,
+    STAGE_SETUP_NETWOKR_ERROR,
     STAGE_WAITING_FOR_CONTROLLER_AFTER_UPDATE,
     STAGE_WAITING_FOR_CREDENTIALS,
     STAGE_ENROLLING,
     STAGE_ENROLLMENT_ERROR,
     STAGE_ENROLLMENT_SUCCESS,
     STAGE_FINISHED
   };
 
   enum UpdateStatus {
     UPDATE_STATUS_UNKNOWN,
@@ skipping 33 matching lines @@
    private:
     DISALLOW_COPY_AND_ASSIGN(Observer);
   };
 
   HostPairingController();
   virtual ~HostPairingController();
 
   // Returns current stage of pairing process.
   virtual Stage GetCurrentStage() = 0;
 
+  // Set current stage and notify its observers the stage has changed.
+  virtual void ChangeStage(Stage new_stage) = 0;

[dzhioev (left Google), 2015/12/15 23:07:23]

This method shouldn't be in a public interface. Changing the stage is a
responsibility of the controller. External code can only notify the controller
about events (e.g. network configuration failed, or update status changed) and
it's up to controller to decide which stage should go next.

+
   // Starts pairing process. Can be called only on |STAGE_NONE| stage.
   virtual void StartPairing() = 0;
 
   // Returns device name.
   virtual std::string GetDeviceName() = 0;
 
   // Returns 6-digit confirmation code. Can be called only on
   // |STAGE_WAITING_FOR_CODE_CONFIRMATION| stage.
   virtual std::string GetConfirmationCode() = 0;
 
@@ skipping 15 matching lines @@
   virtual void AddObserver(Observer* observer) = 0;
   virtual void RemoveObserver(Observer* observer) = 0;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(HostPairingController);
 };
 
 }  // namespace pairing_chromeos
 
 #endif  // COMPONENTS_PAIRING_HOST_PAIRING_CONTROLLER_H_