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diff --git a/chromium/ash/wm/caption_buttons/maximize_bubble_controller.h b/chromium/ash/wm/caption_buttons/maximize_bubble_controller.h
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+++ b/chromium/ash/wm/caption_buttons/maximize_bubble_controller.h
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+// 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_MAXIMIZE_BUBBLE_CONTROLLER_H_
+#define ASH_WM_CAPTION_BUTTONS_MAXIMIZE_BUBBLE_CONTROLLER_H_
+
+#include "ash/ash_export.h"
+#include "ash/wm/caption_buttons/caption_button_types.h"
+#include "ash/wm/workspace/snap_types.h"
+#include "base/memory/scoped_ptr.h"
+
+namespace aura {
+class Window;
+}
+
+namespace base {
+class Timer;
+}
+
+namespace views {
+class CustomButton;
+}
+
+namespace ash {
+
+class FrameMaximizeButton;
+class MaximizeBubbleControllerBubble;
+
+// A class which shows a helper UI for the maximize button after a delay.
+class ASH_EXPORT MaximizeBubbleController {
+ public:
+  MaximizeBubbleController(FrameMaximizeButton* frame_maximize_button,
+                           MaximizeBubbleFrameState maximize_type,
+                           int appearance_delay_ms);
+  // Called from the outside to destroy the interface to the UI visuals.
+  // The visuals will then delete when possible (maybe asynchronously).
+  virtual ~MaximizeBubbleController();
+
+  // Update the UI visuals to reflect the previewed |snap_type| snapping state.
+  void SetSnapType(SnapType snap_type);
+
+  // To achieve proper Z-sorting with the snap animation, this window will be
+  // presented above the phantom window.
+  aura::Window* GetBubbleWindow();
+
+  // Reset the delay of the menu creation (if it was not created yet).
+  void DelayCreation();
+
+  // Called to tell the owning FrameMaximizeButton that a button was clicked.
+  void OnButtonClicked(SnapType snap_type);
+
+  // Called to tell the the owning FrameMaximizeButton that the hover status
+  // for a button has changed. |snap_type| can be either SNAP_LEFT, SNAP_RIGHT,
+  // SNAP_MINIMIZE or SNAP_NONE.
+  void OnButtonHover(SnapType snap_type);
+
+  // Get the owning FrameMaximizeButton.
+  FrameMaximizeButton* frame_maximize_button() {
+    return frame_maximize_button_;
+  }
+
+  // The status of the associated window: Maximized or normal.
+  MaximizeBubbleFrameState maximize_type() const { return maximize_type_; }
+
+  // A unit test function to return buttons of the sub menu. |state| can be
+  // either SNAP_LEFT, SNAP_RIGHT or SNAP_MINIMIZE.
+  views::CustomButton* GetButtonForUnitTest(SnapType state);
+
+  // Called from the the Bubble class to destroy itself: It tells the owning
+  // object that it will destroy itself asynchronously. The owner will then
+  // destroy |this|.
+  void RequestDestructionThroughOwner();
+
+ private:
+  // The function which creates the bubble once the delay is elapsed.
+  void CreateBubble();
+
+  // The owning button which is also the anchor for the menu.
+  FrameMaximizeButton* frame_maximize_button_;
+
+  // The bubble menu.
+  MaximizeBubbleControllerBubble* bubble_;
+
+  // The current maximize state of the owning window.
+  const MaximizeBubbleFrameState maximize_type_;
+
+  // The snap type with which the bubble is created. This is needed because the
+  // creation of the bubble can be delayed and SetSnapType() may be called
+  // before the bubble is created.
+  SnapType snap_type_for_creation_;
+
+  // The timer for the delayed creation of the menu.
+  scoped_ptr<base::Timer> timer_;
+
+  // The appearance delay in ms (delay and fade in & fade out delay).
+  const int appearance_delay_ms_;
+
+  DISALLOW_COPY_AND_ASSIGN(MaximizeBubbleController);
+};
+
+}  // namespace ash
+
+#endif  // ASH_WM_CAPTION_BUTTONS_MAXIMIZE_BUBBLE_CONTROLLER_H_