Add abstractions that let embedders drive tests of WebContents.

chrome/browser/ui/cocoa/bookmarks/bookmark_bar_toolbar_view.h

Index: chrome/browser/ui/cocoa/bookmarks/bookmark_bar_toolbar_view.h
diff --git a/chrome/browser/ui/cocoa/bookmarks/bookmark_bar_toolbar_view.h b/chrome/browser/ui/cocoa/bookmarks/bookmark_bar_toolbar_view.h
index 02936ae322f248acd1f8d02eeaac668d36a83f97..503531e2d1d8d982212841866f8fc6c20224a81b 100644
--- a/chrome/browser/ui/cocoa/bookmarks/bookmark_bar_toolbar_view.h
+++ b/chrome/browser/ui/cocoa/bookmarks/bookmark_bar_toolbar_view.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2010 The Chromium Authors. All rights reserved.
+// Copyright (c) 2012 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.
 
@@ -17,7 +17,6 @@
 #import "chrome/browser/ui/cocoa/bookmarks/bookmark_bar_state.h"
 
 @class BookmarkBarView;
-class TabContents;
 
 namespace ui {
 class ThemeProvider;