First cut at supporting activation in the window manager

mojo/examples/wm_flow/wm/frame_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 MOJO_EXAMPLES_WM_FLOW_WM_FRAME_CONTROLLER_H_
 #define MOJO_EXAMPLES_WM_FLOW_WM_FRAME_CONTROLLER_H_
 
+#include "base/memory/scoped_ptr.h"
 #include "mojo/services/public/cpp/view_manager/view_observer.h"
 #include "ui/gfx/geometry/rect.h"
 
+namespace aura {
+namespace client {
+class ActivationClient;
+}
+}
+
 namespace mojo {
 class NativeWidgetViewManager;
 class View;
+class WindowManagerApp;
 }
 
 namespace views {
 class View;
 class Widget;
 }
 
 // FrameController encapsulates the window manager's frame additions to a window
 // created by an application. It renders the content of the frame and responds
 // to any events targeted at it.
 class FrameController : mojo::ViewObserver {
  public:
-  FrameController(mojo::View* view, mojo::View** app_view);
+  FrameController(mojo::View* view,
+                  mojo::View** app_view,
+                  aura::client::ActivationClient* activation_client,
+                  mojo::WindowManagerApp* window_manager_app);
   virtual ~FrameController();
 
   void CloseWindow();
   void ToggleMaximize();
 
+  void ActivateWindow();
+
  private:
   class LayoutManager;
   friend class LayoutManager;
+  class FrameEventHandler;
 
   virtual void OnViewDestroyed(mojo::View* view) MOJO_OVERRIDE;
 
   mojo::View* view_;
   mojo::View* app_view_;
   views::View* frame_view_;
   LayoutManager* frame_view_layout_manager_;
   views::Widget* widget_;
   bool maximized_;
   gfx::Rect restored_bounds_;
+  aura::client::ActivationClient* activation_client_;
+  mojo::WindowManagerApp* window_manager_app_;
+  scoped_ptr<FrameEventHandler> frame_event_handler_;
 
   DISALLOW_COPY_AND_ASSIGN(FrameController);
 };
 
 #endif  // MOJO_EXAMPLES_WM_FLOW_WM_FRAME_CONTROLLER_H_