Make win_aura work without ash.

ui/base/view_prop.h

Index: ui/base/view_prop.h
===================================================================
--- ui/base/view_prop.h	(revision 134107)
+++ ui/base/view_prop.h	(working copy)
@@ -11,8 +11,8 @@
 #include "ui/base/ui_export.h"
 #include "ui/gfx/native_widget_types.h"
 
-#if defined(USE_AURA) || defined(OS_LINUX) || defined(OS_MACOSX)
-#error view_prop.h is only for win, non aura build
+#if defined(OS_MACOSX) || (defined(OS_LINUX) && !defined(USE_AURA))
+#error view_prop.h is only for windows and aura builds.
 #endif
 
 namespace ui {
@@ -28,12 +28,12 @@
   //
   // ViewProp does *not* make a copy of the char*, the pointer is used for
   // sorting.
-  ViewProp(gfx::NativeView view, const char* key, void* data);
+  ViewProp(gfx::AcceleratedWidget view, const char* key, void* data);
   ~ViewProp();
 
   // Returns the value associated with the view/key pair, or NULL if there is
   // none.
-  static void* GetValue(gfx::NativeView view, const char* key);
+  static void* GetValue(gfx::AcceleratedWidget view, const char* key);
 
   // Returns the key.
   const char* Key() const;