Load devtools files from resources.pak rather than from disk take 2.

chrome/chrome.gyp

 # Copyright (c) 2010 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.
 {
   'variables': {
     'chromium_code': 1,
 
     'variables': {
       'version_py_path': 'tools/build/version.py',
       'version_path': 'VERSION',
@@ skipping 1307 matching lines @@
           },
           'dependencies': [
             'chrome_extra_resources',
           ],
           'actions': [
             {
               'action_name': 'repack_resources',
               'variables': {
                 'pak_inputs': [
                   '<(grit_out_dir)/component_extension_resources.pak',
+                  '<(grit_out_dir)/devtools_resources.pak',
                   '<(grit_out_dir)/net_internals_resources.pak',
                   '<(grit_out_dir)/shared_resources.pak',
                   '<(grit_out_dir)/sync_internals_resources.pak',
                 ],
               },
               'inputs': [
                 '<(repack_path)',
                 '<@(pak_inputs)',
               ],
               'outputs': [
@@ skipping 381 matching lines @@
       }],  # targets
     }],  # OS=="linux" or OS=="freebsd" or OS=="openbsd" or OS=="solaris"
   ],  # 'conditions'
 }
 
 # Local Variables:
 # tab-width:2
 # indent-tabs-mode:nil
 # End:
 # vim: set expandtab tabstop=2 shiftwidth=2: