[Mac] Refactor location-bar autocomplete cell classes.

chrome/browser/cocoa/location_bar_cell.h

Index: chrome/browser/cocoa/location_bar_cell.h
diff --git a/chrome/browser/cocoa/location_bar_cell.h b/chrome/browser/cocoa/location_bar_cell.h
deleted file mode 100644
index 0bfb1dd5790429ff2a46f5f88cd733bcd3891c75..0000000000000000000000000000000000000000
--- a/chrome/browser/cocoa/location_bar_cell.h
+++ /dev/null
@@ -1,12 +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>
-
-// A cell that draws the location bar, for now all it does is shift
-// the text down so it is vertically centered.
-
-@interface LocationBarCell : NSTextFieldCell {
-}
-@end