MacViews: Fix missing browser assets

chrome/browser/ui/views/theme_image_mapper.cc

 // Copyright 2014 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.
 
 #include "chrome/browser/ui/views/theme_image_mapper.h"
 
 #include "grit/theme_resources.h"
 
 namespace chrome {
 
+// On platforms where there is both Ash and a desktop browser, provide DESKTOP
+// resources for the latter.
 int MapThemeImage(HostDesktopType desktop_type, int resource) {
-#if !defined(OS_CHROMEOS)
+#if !defined(OS_CHROMEOS) && !defined(OS_MACOSX)
   if (desktop_type != HOST_DESKTOP_TYPE_NATIVE)
     return resource;
 
   switch (resource) {
     case IDR_CONTENT_TOP_CENTER:
       return IDR_CONTENT_TOP_CENTER_DESKTOP;
     case IDR_OTR_ICON:
       return IDR_OTR_ICON_DESKTOP;
     case IDR_THEME_FRAME:
       return IDR_THEME_FRAME_DESKTOP;
@@ skipping 11 matching lines @@
       return IDR_THEME_TOOLBAR_DESKTOP;
     default:
       break;
   }
 #endif  // !defined(OS_CHROMEOS)
 
   return resource;
 }
 
 }  // namespace chrome