resources: Prevent including the same resource in multiple pack files.

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 198 matching lines @@
   "chrome/browser/resources/password_manager_internals_resources.grd": {
     "includes": [27800],
   },
   "device/bluetooth/bluetooth_strings.grd": {
     "messages": [28000],
   },
   "ui/keyboard/keyboard_resources.grd": {
     "includes": [28050],
   },
   "ui/file_manager/file_manager_resources.grd": {
-    "includes": [28100],
+    "includes": [28120],

[Nico, 2015/05/06 01:06:35]

why this change?

[sadrul, 2015/05/06 17:29:24]

keyboard_resources.grd has more than 50 resources. So some of the resources in
keyboard_resources.grd have conflicting resource-ids as some of the resources in
file_manager_resources.grd (and helpfully trips the new DCHECK). This was a bit
surprising to me. Are there other existing tools/checks that are supposed to
have caught this?

[Nico, 2015/05/06 17:34:59]

I thought we had something that checks that grd file ids don't overlap, but I'm
not sure. Maybe thestig knows?

   },
   "components/chrome_apps/chrome_apps_resources.grd": {
     "includes": [28250],
   },
   "ui/login/login_resources.grd": {
     "includes": [28300],
   },
   "ui/oobe/oobe_resources.grd": {
     "includes": [28310],
   },
@@ skipping 32 matching lines @@
   # These files don't need to reserve resource ids, but are listed here so that
   # translation scripts know of their existence.
   "android_webview/java/strings/android_webview_strings.grd": {},
   "chrome/android/java/strings/android_chrome_strings.grd": {},
   "content/public/android/java/strings/android_content_strings.grd": {},
   "ui/accessibility/extensions/strings/accessibility_extensions_strings.grd": {},
   "ui/android/java/strings/android_ui_strings.grd": {},
 
   # Resource ids starting at 31000 are reserved for projects built on Chromium.
 }