aura: Fix views_unittests on linux.

views/controls/scrollbar/native_scroll_bar.cc

Index: views/controls/scrollbar/native_scroll_bar.cc
diff --git a/views/controls/scrollbar/native_scroll_bar.cc b/views/controls/scrollbar/native_scroll_bar.cc
index 5372b175ac08526acf0ae52c7420dccd40b86f64..7553cd66763339c9632715269ab5e1bcef6d3605 100644
--- a/views/controls/scrollbar/native_scroll_bar.cc
+++ b/views/controls/scrollbar/native_scroll_bar.cc
@@ -11,6 +11,10 @@
 #include "views/controls/scrollbar/native_scroll_bar_wrapper.h"
 #include "views/widget/widget.h"
 
+#if defined(USE_AURA)
+#include "views/controls/scrollbar/native_scroll_bar_views.h"
+#endif
+
 namespace views {
 
 // static
@@ -97,29 +101,5 @@ int NativeScrollBar::GetPosition() const {
   return native_wrapper_->GetPosition();
 }
 
-
-#if defined(USE_AURA)
-
-// static
-NativeScrollBarWrapper* NativeScrollBarWrapper::CreateWrapper(
-    NativeScrollBar* scroll_bar) {
-  NOTIMPLEMENTED();
-  return NULL;
-}
-
-// static
-int NativeScrollBarWrapper::GetHorizontalScrollBarHeight() {
-  NOTIMPLEMENTED();
-  return 16;
-}
-
-// static
-int NativeScrollBarWrapper::GetVerticalScrollBarWidth() {
-  NOTIMPLEMENTED();
-  return 16;
-}
-
-#endif
-
 }  // namespace views