[Mac] Removes the match preview tear image. Also removes the underlying reso...

chrome/browser/cocoa/previewable_contents_controller.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_COCOA_PREVIEWABLE_CONTENTS_CONTROLLER_H_
 #define CHROME_BROWSER_COCOA_PREVIEWABLE_CONTENTS_CONTROLLER_H_
 #pragma once
 
 #import <Cocoa/Cocoa.h>
 
 class TabContents;
 
 // PreviewableContentsController manages the display of up to two tab contents
 // views.  It is primarily for use with Instant results.  This class supports
 // the notion of an "active" view vs. a "preview" tab contents view.
 //
 // The "active" view is a container view that can be retrieved using
 // |-activeContainer|.  Its contents are meant to be managed by an external
 // class.
 //
 // The "preview" can be set using |-showPreview:| and |-hidePreview|.  When a
 // preview is set, the active view is hidden (but stays in the view hierarchy).
 // When the preview is removed, the active view is reshown.
 @interface PreviewableContentsController : NSViewController {
  @private
   // Container view for the "active" contents.
   IBOutlet NSView* activeContainer_;
 
-  // The close preview button.
-  IBOutlet NSButton* closeButton_;
-
   // The preview TabContents.  Will be NULL if no preview is currently showing.
   TabContents* previewContents_;  // weak
 }
 
 @property(readonly, nonatomic) NSView* activeContainer;
 
 // Sets the current preview and installs its TabContentsView into the view
 // hierarchy.  Hides the active view.  |preview| must not be NULL.
 - (void)showPreview:(TabContents*)preview;
 
 // Closes the current preview and shows the active view.
 - (void)hidePreview;
 
 // Returns YES if the preview contents is currently showing.
 - (BOOL)isShowingPreview;
 
-// Simply calls |-hidePreview|.  Convenience method for use by the close button.
-- (IBAction)closePreview:(id)sender;
-
 @end
 
 #endif  // CHROME_BROWSER_COCOA_PREVIEWABLE_CONTENTS_CONTROLLER_H_