MacViews: Gets views_examples_with_content_exe compiling on Mac

ui/views/examples/examples_window.h

Index: ui/views/examples/examples_window.h
diff --git a/ui/views/examples/examples_window.h b/ui/views/examples/examples_window.h
index ba910e10e8f90ac7ce3d2bb7130c0b5d8a06781a..89222ef84a0f35dd97f70e175680d305cc1d9775 100644
--- a/ui/views/examples/examples_window.h
+++ b/ui/views/examples/examples_window.h
@@ -7,6 +7,7 @@
 
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/scoped_vector.h"
+#include "ui/gfx/native_widget_types.h"
 #include "ui/views/examples/views_examples_export.h"
 
 namespace aura {
@@ -28,7 +29,7 @@ enum Operation {
 // window should be created (see |Widget::InitParams::context| for details).
 VIEWS_EXAMPLES_EXPORT void ShowExamplesWindow(
     Operation operation,
-    aura::Window* window_context,
+    gfx::NativeView window_context,
     scoped_ptr<ScopedVector<ExampleBase> > extra_examples);
 
 }  // namespace examples