athena: Bundle a static background image with athena.

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 36 matching lines @@
   "webkit/glue/resources/webkit_resources.grd": {
     "structures": [4700],
   },
   "ui/resources/ui_resources.grd": {
     "structures": [5500],
   },
   "ash/resources/ash_resources.grd": {
     "includes": [6100],
     "structures": [6150],
   },
+  "athena/resources/athena_resources.grd": {
+    "structures": [6400],
+  },
   "chrome/app/theme/theme_resources.grd": {
     "structures": [6500],
   },
   "chrome/app/theme/chrome_unscaled_resources.grd": {
     "includes": [7500],
   },
   "ui/strings/app_locale_settings.grd": {
     "messages": [9000],
   },
   "chrome/app/resources/locale_settings.grd": {
@@ skipping 147 matching lines @@
     "includes": [30250],
   },
   "components/resources/components_scaled_resources.grd": {
     "structures": [30350],
   },
   "third_party/WebKit/public/blink_resources.grd": {
     "includes": [30500],
   },
   # Resource ids starting at 31000 are reserved for projects built on Chromium.
 }