chrome: Cleanup class/struct forward declarations

chrome/browser/extensions/browser_action_test_util.h

 // Copyright (c) 2010 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_EXTENSIONS_BROWSER_ACTION_TEST_UTIL_H_
 #define CHROME_BROWSER_EXTENSIONS_BROWSER_ACTION_TEST_UTIL_H_
 
 #include <stddef.h>
 
 #include <memory>
 #include <string>
 
 #include "base/macros.h"
 #include "ui/gfx/native_widget_types.h"
 
 class Browser;
 class ToolbarActionsBar;
-class ToolbarActionsBarDelegate;
 
 namespace gfx {
 class Image;
-class Rect;
 class Size;
 }  // namespace gfx
 
 // A class that creates and owns the platform-specific views for the browser
 // actions container. Specific implementations are in the .cc/.mm files.
 class TestToolbarActionsBarHelper {
  public:
   virtual ~TestToolbarActionsBarHelper() {}
 };
 
@@ skipping 76 matching lines @@
   Browser* browser_;  // weak
 
   // Our test helper, which constructs and owns the views if we don't have a
   // real browser window, or if this is an overflow version.
   std::unique_ptr<TestToolbarActionsBarHelper> test_helper_;
 
   DISALLOW_COPY_AND_ASSIGN(BrowserActionTestUtil);
 };
 
 #endif  // CHROME_BROWSER_EXTENSIONS_BROWSER_ACTION_TEST_UTIL_H_