[Mac] Move all the related files for the Wrench menu into a subdir of c/b/u/c...

chrome/browser/ui/cocoa/menu_tracked_button.h

-// Copyright (c) 2010 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 CHROME_BROWSER_UI_COCOA_MENU_TRACKED_BUTTON_H_
-#define CHROME_BROWSER_UI_COCOA_MENU_TRACKED_BUTTON_H_
-#pragma once
-
-#import <Cocoa/Cocoa.h>
-
-// A MenuTrackedButton is meant to be used whenever a button is placed inside
-// the custom view of an NSMenuItem. If the user opens the menu in a non-sticky
-// fashion (i.e. clicks, holds, and drags) and then releases the mouse over
-// a MenuTrackedButton, it will |-performClick:| itself.
-//
-// To create the hover state effects, there are two code paths.  When the menu
-// is opened sticky, a tracking rect produces mouse entered/exit events that
-// allow for setting the cell's highlight property.  When in a drag cycle,
-// however, the only event received is |-mouseDragged:|.  Therefore, a
-// delayed selector is scheduled to poll the mouse location after each drag
-// event.  This checks if the user is still over the button after the drag
-// events stop being sent, indicating either the user is hovering without
-// movement or that the mouse is no longer over the receiver.
-@interface MenuTrackedButton : NSButton {
- @private
-  // If the button received a |-mouseEntered:| event. This short-circuits the
-  // custom drag tracking logic.
-  BOOL didEnter_;
-
-  // Whether or not the user is in a click-drag-release event sequence. If so
-  // and this receives a |-mouseUp:|, then this will click itself.
-  BOOL tracking_;
-
-  // In order to get hover effects when the menu is sticky-opened, a tracking
-  // rect needs to be installed on the button.
-  NSTrackingRectTag trackingTag_;
-}
-
-@property (nonatomic, readonly, getter=isTracking) BOOL tracking;
-
-@end
-
-#endif  // CHROME_BROWSER_UI_COCOA_MENU_TRACKED_BUTTON_H_