Add flag to enable immersive fullscreen for v2 apps

ash/wm/caption_buttons/frame_maximize_button.h

 // Copyright 2013 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_WM_CAPTION_BUTTONS_FRAME_MAXIMIZE_BUTTON_H_
 #define ASH_WM_CAPTION_BUTTONS_FRAME_MAXIMIZE_BUTTON_H_
 
 #include "ash/ash_export.h"
 #include "ash/wm/caption_buttons/maximize_bubble_frame_state.h"
 #include "ash/wm/workspace/snap_types.h"
 #include "base/memory/scoped_ptr.h"
+#include "base/observer_list.h"
 #include "base/timer/timer.h"
 #include "ui/aura/window_observer.h"
 #include "ui/views/controls/button/image_button.h"
 #include "ui/views/widget/widget_observer.h"
 
 namespace views {
 class Widget;
 }
 
 namespace ash {
+class FrameMaximizeButtonObserver;
 
 namespace internal {
 class PhantomWindowController;
 class SnapSizer;
 }
 
 class MaximizeBubbleController;
 
 // Button used for the maximize control on the frame. Handles snapping logic.
 class ASH_EXPORT FrameMaximizeButton : public views::ImageButton,
                                        public views::WidgetObserver,
                                        public aura::WindowObserver {
  public:
   FrameMaximizeButton(views::ButtonListener* listener,
                       views::Widget* frame);
   virtual ~FrameMaximizeButton();
 
+  void AddObserver(FrameMaximizeButtonObserver* observer);
+  void RemoveObserver(FrameMaximizeButtonObserver* observer);
+
   // Updates |snap_type_| based on a a given snap type. This is used by
   // external hover events from the button menu.
   void SnapButtonHovered(SnapType type);
 
   // The user clicked the |type| button and the action needs to be performed,
   // which will at the same time close the window.
   void ExecuteSnapAndCloseMenu(SnapType type);
 
+  // Called by the MaximizeBubbleController when the maximize bubble is shown.
+  void OnMaximizeBubbleShown(views::Widget* bubble);
+
   // Remove the maximize menu from the screen (and destroy it).
   void DestroyMaximizeMenu();
 
   // Returns true when the user clicks and drags the button.
   bool is_snap_enabled() const { return is_snap_enabled_; }
 
   // WindowObserver overrides:
   virtual void OnWindowBoundsChanged(aura::Window* window,
                                      const gfx::Rect& old_bounds,
                                      const gfx::Rect& new_bounds) OVERRIDE;
@@ skipping 111 matching lines @@
 
   scoped_ptr<EscapeEventFilter> escape_event_filter_;
 
   base::OneShotTimer<FrameMaximizeButton> update_timer_;
 
   scoped_ptr<MaximizeBubbleController> maximizer_;
 
   // The delay of the bubble appearance.
   int bubble_appearance_delay_ms_;
 
+  ObserverList<FrameMaximizeButtonObserver> observer_list_;
+
   DISALLOW_COPY_AND_ASSIGN(FrameMaximizeButton);
 };
 
 }  // namespace ash
 
 #endif  // ASH_WM_CAPTION_BUTTONS_FRAME_MAXIMIZE_BUTTON_H_