Adding a Views scrollbar implementation.

views/controls/scrollbar/native_scroll_bar_wrapper.h

Index: views/controls/scrollbar/native_scroll_bar_wrapper.h
diff --git a/views/controls/scrollbar/native_scroll_bar_wrapper.h b/views/controls/scrollbar/native_scroll_bar_wrapper.h
index fb92c3d5afc1f0b56b5bb4f6351ba6900b871f44..210401a8e41c830dd7799882778a93cd17fc0cfd 100644
--- a/views/controls/scrollbar/native_scroll_bar_wrapper.h
+++ b/views/controls/scrollbar/native_scroll_bar_wrapper.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2010 The Chromium Authors. All rights reserved.
+// Copyright (c) 2011 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.
 
@@ -13,7 +13,7 @@ class View;
 
 // A specialization of NativeControlWrapper that hosts a platform-native
 // scroll bar.
-class NativeScrollBarWrapper {
+class VIEWS_EXPORT NativeScrollBarWrapper {
  public:
   virtual ~NativeScrollBarWrapper() {}