Move Ash wallpapers into a separate grd/pak file to avoid duplication

tools/gritsettings/resource_ids

 # Copyright (c) 2012 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.
 #
 # This file is used to assign starting resource ids for resources and strings
 # used by Chromium.  This is done to ensure that resource ids are unique
 # across all the grd files.  If you are adding a new grd file, please add
 # a new entry to this file.
 #
 # The first entry in the file, SRCDIR, is special: It is a relative path from
@@ skipping 29 matching lines @@
   "net/base/net_resources.grd": {
     "includes": [4000],
   },
   "webkit/glue/resources/webkit_resources.grd": {
     "includes": [4500],
     "structures": [4700],
   },
   "webkit/tools/test_shell/test_shell_resources.grd": {
     "includes": [5000],
   },
+  "ui/resources/ui_resources_wallpapers.grd": {
+    "includes": [5500],
+  },
   "ui/resources/ui_resources.grd": {
-    "includes": [5500],
     "structures": [6000],
   },
   "chrome/app/theme/theme_resources.grd": {
     "includes": [6500],
     "structures": [7000],
   },
   "chrome_frame/resources/chrome_frame_resources.grd": {
     "includes": [8000],
   },
   # WebKit.grd can be in two different places depending on whether we are
@@ skipping 113 matching lines @@
   "ash/ash_strings.grd": {
     "messages": [26000],
   },
   "chrome/common/extensions_api_resources.grd": {
     "includes": [26500],
   },
   "third_party/trace-viewer/src/tracing.grd": {
     "includes": [27000],
   },
 }