[Mac] Move the associated find bar files into a subdir of c/b/ui/cocoa/...

chrome/browser/ui/cocoa/find_bar_text_field.h

Index: chrome/browser/ui/cocoa/find_bar_text_field.h
===================================================================
--- chrome/browser/ui/cocoa/find_bar_text_field.h	(revision 71508)
+++ chrome/browser/ui/cocoa/find_bar_text_field.h	(working copy)
@@ -1,21 +0,0 @@
-// 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>
-#import "chrome/browser/ui/cocoa/styled_text_field.h"
-
-@class FindBarTextFieldCell;
-
-// TODO(rohitrao): This class may not need to exist, since it does not really
-// add any functionality over StyledTextField.  See if we can change the nib
-// file to put a FindBarTextFieldCell into a StyledTextField.
-
-// Extends StyledTextField to use a custom cell class (FindBarTextFieldCell).
-@interface FindBarTextField : StyledTextField {
-}
-
-// Convenience method to return the cell, casted appropriately.
-- (FindBarTextFieldCell*)findBarTextFieldCell;
-
-@end