Separate athena's startup process from AppShell's

athena/screen/public/screen_manager.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 ATHENA_SCREEN_PUBLIC_SCREEN_MANAGER_H_
 #define ATHENA_SCREEN_PUBLIC_SCREEN_MANAGER_H_
 
 #include <string>
 
 #include "athena/athena_export.h"
@@ skipping 33 matching lines @@
 
     // True if the container will grab all of input events.
     bool grab_inputs;
 
     // Defines the z_order priority of the container.
     int z_order_priority;
   };
 
   // Creates, returns and deletes the singleton object of the ScreenManager
   // implementation.
-  static ScreenManager* Create(ScreenManagerDelegate* delegate,
-                               aura::Window* root);
+  static ScreenManager* Create(aura::Window* root);
   static ScreenManager* Get();
   static void Shutdown();
 
   virtual ~ScreenManager() {}
 
-  // Sets the screen's work area insets.
-  virtual void SetWorkAreaInsets(const gfx::Insets& insets) = 0;
-
   // Creates the container window that is used when creating a normal
   // widget without specific parent.
   virtual aura::Window* CreateDefaultContainer(
       const ContainerParams& params) = 0;
 
   // Creates the container window on the screen.
   virtual aura::Window* CreateContainer(const ContainerParams& params) = 0;
 
   // Return the context object to be used for widget creation.
   virtual aura::Window* GetContext() = 0;
 
   // Sets the background image.
   virtual void SetBackgroundImage(const gfx::ImageSkia& image) = 0;
 
   // Set screen rotation.
   // TODO(flackr): Extract and use ash DisplayManager to set rotation
   // instead: http://crbug.com/401044.
   virtual void SetRotation(gfx::Display::Rotation rotation) = 0;
 
   // Returns the LayerAnimator to use to animate the entire screen (e.g. fade
   // screen to white).
   virtual ui::LayerAnimator* GetScreenAnimator() = 0;
-
-  // Create a focus rules.
-  // TODO(oshima): Make this virtual function.
-  static wm::FocusRules* CreateFocusRules();
 };
 
 }  // namespace athena
 
 #endif  // ATHENA_SCREEN_PUBLIC_SCREEN_MANAGER_H_