Reverting 26214.

chrome/browser/cocoa/focus_tracker.h

-// Copyright (c) 2009 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 "base/scoped_nsobject.h"
-
-// A class that handles saving and restoring focus.  An instance of
-// this class snapshots the currently focused view when it is
-// constructed, and callers can use restoreFocus to return focus to
-// that view.  FocusTracker will not restore focus to views that are
-// no longer in the view hierarchy or are not in the correct window.
-
-@interface FocusTracker : NSObject {
- @private
-  scoped_nsobject<NSView> focusedView_;
-}
-
-// |window| is the window that we are saving focus for.  This
-// method snapshots the currently focused view.
-- (id)initWithWindow:(NSWindow*)window;
-
-// Attempts to restore focus to the snapshotted view.  Returns YES if
-// focus was restored.  Will not restore focus if the view is no
-// longer in the view hierarchy under |window|.
-- (BOOL)restoreFocusInWindow:(NSWindow*)window;
-@end