Converts mash to use Shell

ash/root_window_controller.h

 // Copyright (c) 2012 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 ASH_ROOT_WINDOW_CONTROLLER_H_
 #define ASH_ROOT_WINDOW_CONTROLLER_H_
 
 #include <map>
 #include <memory>
+#include <vector>
 
 #include "ash/ash_export.h"
 #include "ash/common/shell_observer.h"
 #include "ash/common/wm/workspace/workspace_types.h"
 #include "ash/public/cpp/shelf_types.h"
 #include "base/macros.h"
 #include "ui/aura/window.h"
 #include "ui/aura/window_tree_host.h"
 #include "ui/views/widget/widget.h"
 
@@ skipping 74 matching lines @@
 
   // Creates and Initialize the RootWindowController for secondary displays.
   static void CreateForSecondaryDisplay(AshWindowTreeHost* host);
 
   // Returns a RootWindowController of the window's root window.
   static RootWindowController* ForWindow(const aura::Window* window);
 
   // Returns the RootWindowController of the target root window.
   static RootWindowController* ForTargetRootWindow();
 
+  static std::vector<RootWindowController*> root_window_controllers() {
+    return root_window_controllers_ ? *root_window_controllers_
+                                    : std::vector<RootWindowController*>();
+  }
+
   // Configures |init_params| prior to initializing |widget|.
   // |shell_container_id| is the id of the container to parent |widget| to.
   // TODO(sky): remove this, http://crbug.com/671246.
   void ConfigureWidgetInitParamsForContainer(
       views::Widget* widget,
       int shell_container_id,
       views::Widget::InitParams* init_params);
 
   // TODO(sky): move these to a separate class or use AshWindowTreeHost in
   // mash. http://crbug.com/671246.
@@ skipping 250 matching lines @@
   // Heads-up displays for touch events. These HUDs are not owned by the root
   // window controller and manage their own lifetimes.
   TouchHudDebug* touch_hud_debug_ = nullptr;
   TouchHudProjection* touch_hud_projection_ = nullptr;
 
   // Handles double clicks on the panel window header.
   std::unique_ptr<ui::EventHandler> panel_container_handler_;
 
   std::unique_ptr<::wm::ScopedCaptureClient> capture_client_;
 
+  static std::vector<RootWindowController*>* root_window_controllers_;
+
   DISALLOW_COPY_AND_ASSIGN(RootWindowController);
 };
 
 // On classic ash, returns the RootWindowController for the given |root_window|.
 // On mus ash, returns the RootWindowController for the primary display.
 // See RootWindowController class comment above.
 ASH_EXPORT RootWindowController* GetRootWindowController(
     const aura::Window* root_window);
 
 }  // namespace ash
 
 #endif  // ASH_ROOT_WINDOW_CONTROLLER_H_