Porting in chrome/views/

chrome/views/native_scroll_bar.h

Index: chrome/views/native_scroll_bar.h
diff --git a/chrome/views/native_scroll_bar.h b/chrome/views/native_scroll_bar.h
index 3b9462109cf8f8850ceb78361693eef17b0d4489..8e2f1be1af731b25712835770c64417e5d85ed52 100644
--- a/chrome/views/native_scroll_bar.h
+++ b/chrome/views/native_scroll_bar.h
@@ -5,6 +5,8 @@
 #ifndef CHROME_VIEWS_NATIVE_SCROLLBAR_H__
 #define CHROME_VIEWS_NATIVE_SCROLLBAR_H__
 
+#include "build/build_config.h"
+
 #include "chrome/views/scroll_bar.h"
 
 namespace views {
@@ -48,9 +50,11 @@ class NativeScrollBar : public ScrollBar {
   static int GetVerticalScrollBarWidth();
 
  private:
+#if defined(OS_WIN)
   // The sb_view_ takes care of keeping sb_container in sync with the
   // view hierarchy
   HWNDView* sb_view_;
+#endif  // defined(OS_WIN)
 
   // sb_container_ is a custom hwnd that we use to wrap the real
   // windows scrollbar. We need to do this to get the scroll events