SetHostConfiguration() and ConfigureHost() are moved from ScreenObserver.

chrome/browser/chromeos/login/screens/controller_pairing_screen.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 CHROME_BROWSER_CHROMEOS_LOGIN_SCREENS_CONTROLLER_PAIRING_SCREEN_H_
 #define CHROME_BROWSER_CHROMEOS_LOGIN_SCREENS_CONTROLLER_PAIRING_SCREEN_H_
 
 #include "base/macros.h"
 
 #include "chrome/browser/chromeos/login/screens/base_screen.h"
 #include "chrome/browser/chromeos/login/screens/controller_pairing_screen_actor.h"
 #include "components/login/screens/screen_context.h"
 #include "components/pairing/controller_pairing_controller.h"
 
 namespace chromeos {
 
 class ControllerPairingScreen
     : public BaseScreen,
       public pairing_chromeos::ControllerPairingController::Observer,
       public ControllerPairingScreenActor::Delegate {
  public:
+  class Delegate {
+   public:
+    virtual ~Delegate() {}

[achuithb, 2014/10/27 18:50:57]

nit: I believe this could be made protected

+
+    // Set remora configuration from shark.
+    virtual void SetHostConfiguration() = 0;
+  };
+
   ControllerPairingScreen(
       ScreenObserver* observer,
       ControllerPairingScreenActor* actor,
       pairing_chromeos::ControllerPairingController* shark_controller);
   virtual ~ControllerPairingScreen();
 
+  void SetDelegate(Delegate* delegate);

[achuithb, 2014/10/27 18:50:57]

I would just pass in the delegate in the ctor instead.

+
  private:
   typedef pairing_chromeos::ControllerPairingController::Stage Stage;
 
   void CommitContextChanges();
   bool ExpectStageIs(Stage stage) const;
 
   // Overridden from BaseScreen:
   virtual void PrepareToShow() override;
   virtual void Show() override;
   virtual void Hide() override;
@@ skipping 11 matching lines @@
 
   // Context for sharing data between C++ and JS.
   // TODO(dzhioev): move to BaseScreen when possible.
   ::login::ScreenContext context_;
 
   ControllerPairingScreenActor* actor_;
 
   // Controller performing pairing. Owned by the wizard controller.
   pairing_chromeos::ControllerPairingController* shark_controller_;
 
+  Delegate* delegate_;
+
   // Current stage of pairing process.
   Stage current_stage_;
 
   // If this one is |false| first device in device list will be preselected on
   // next device list update.
   bool device_preselected_;
 
   DISALLOW_COPY_AND_ASSIGN(ControllerPairingScreen);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_LOGIN_SCREENS_CONTROLLER_PAIRING_SCREEN_H_