Aura: Add --aura-laptop-mode to fill the workspace with a single window.

ui/aura_shell/shell.h

 // Copyright (c) 2011 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 UI_AURA_SHELL_SHELL_H_
 #define UI_AURA_SHELL_SHELL_H_
 #pragma once
 
 #include <utility>
 #include <vector>
 
 #include "base/basictypes.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/task.h"
 #include "base/compiler_specific.h"
 #include "base/memory/weak_ptr.h"
 #include "ui/aura_shell/aura_shell_export.h"
 
 namespace aura {
 class EventFilter;
+class RootWindow;
 class Window;
 }
 namespace gfx {
 class Rect;
 }
 
 namespace aura_shell {
 
 class Launcher;
 class ShellAcceleratorController;
@@ skipping 39 matching lines @@
 
   ShellAcceleratorController* accelerator_controller() {
     return accelerator_controller_.get();
   }
 
   ShellTooltipManager* tooltip_manager() {
     return tooltip_manager_.get();
   }
 
   ShellDelegate* delegate() { return delegate_.get(); }
+
+  // May return NULL if we're not using a launcher (e.g. laptop-mode).
   Launcher* launcher() { return launcher_.get(); }
 
   // Made available for tests.
   internal::ShadowController* shadow_controller() {
     return shadow_controller_.get();
   }
 
  private:
   typedef std::pair<aura::Window*, gfx::Rect> WindowAndBoundsPair;
 
   explicit Shell(ShellDelegate* delegate);
   virtual ~Shell();
 
   void Init();
+  void InitLayoutManagers(aura::RootWindow* root_window);
 
   // Enables WorkspaceManager.
   void EnableWorkspaceManager();
 
   static Shell* instance_;
 
   std::vector<WindowAndBoundsPair> to_restore_;
 
   base::WeakPtrFactory<Shell> method_factory_;
 
@@ skipping 13 matching lines @@
   scoped_ptr<internal::ShellAcceleratorFilter> accelerator_filter_;
 
   scoped_ptr<ShellTooltipManager> tooltip_manager_;
 
   DISALLOW_COPY_AND_ASSIGN(Shell);
 };
 
 }  // namespace aura_shell
 
 #endif  // UI_AURA_SHELL_SHELL_H_