Adds a hide button to the desktop capture notification bar.

chrome/browser/ui/cocoa/screen_capture_notification_ui_cocoa.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.
 
 #import <Cocoa/Cocoa.h>
 
 #include <string>
 
 #include "base/callback.h"
 #include "base/gtest_prod_util.h"
 #include "base/mac/scoped_nsobject.h"
 #include "base/strings/string16.h"
 #include "chrome/browser/ui/screen_capture_notification_ui.h"
 
 // Controller for the screen capture notification window which allows the user
 // to quickly stop screen capturing.
 @interface ScreenCaptureNotificationController
     : NSWindowController<NSWindowDelegate> {
  @private
   base::Closure stop_callback_;
   base::scoped_nsobject<NSButton> stopButton_;
+  base::scoped_nsobject<NSButton> minimizeButton_;
 }
 
 - (id)initWithCallback:(const base::Closure&)stop_callback
                   text:(const base::string16&)text;
 - (void)stopSharing:(id)sender;
+- (void)minimize:(id)sender;
 
 @end
 
 class ScreenCaptureNotificationUICocoa : public ScreenCaptureNotificationUI {
  public:
   explicit ScreenCaptureNotificationUICocoa(const base::string16& text);
   virtual ~ScreenCaptureNotificationUICocoa();
 
   // ScreenCaptureNotificationUI interface.
   virtual void OnStarted(const base::Closure& stop_callback) OVERRIDE;
 
  private:
   friend class ScreenCaptureNotificationUICocoaTest;
 
   const base::string16 text_;
   base::scoped_nsobject<ScreenCaptureNotificationController> windowController_;
 
   DISALLOW_COPY_AND_ASSIGN(ScreenCaptureNotificationUICocoa);
 };