Several background pattern fixes on the Mac....

chrome/browser/cocoa/tab_cell.h

Index: chrome/browser/cocoa/tab_cell.h
===================================================================
--- chrome/browser/cocoa/tab_cell.h	(revision 28537)
+++ chrome/browser/cocoa/tab_cell.h	(working copy)
@@ -1,20 +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.
-
-#ifndef CHROME_BROWSER_COCOA_TAB_CELL_H_
-#define CHROME_BROWSER_COCOA_TAB_CELL_H_
-
-#import <Cocoa/Cocoa.h>
-
-// A button cell that handles drawing/highlighting of tabs in the tab bar. Text
-// drawing leaves room for an icon view on the left of the tab and a close
-// button on the right. Technically, though, it doesn't know anything about what
-// it's leaving space for, so they could be reversed or even replaced by views
-// for other purposes.
-
-@interface TabCell : NSButtonCell {
-}
-@end
-
-#endif  // CHROME_BROWSER_COCOA_TAB_CELL_H_