Remove duplication in mini_installer.gyp/.gypi - Take 2

chrome/installer/installer_tools.gyp

+# Copyright (c) 2011 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': {
+    'version_py': '<(DEPTH)/build/util/version.py',
+    'version_path': '<(DEPTH)/chrome/VERSION',
+    'lastchange_path': '<(DEPTH)/build/util/LASTCHANGE',
+    'branding_dir': '<(DEPTH)/chrome/app/theme/<(branding_path_component)',
+    'msvs_use_common_release': 0,
+    'msvs_use_common_linker_extras': 0,
+  },
+  'conditions': [
+    ['OS=="win"', {
+      'targets': [
+        {
+          'target_name': 'validate_installation',
+          'type': 'executable',
+          'dependencies': [
+            '<(DEPTH)/base/base.gyp:base',
+            '<(DEPTH)/chrome/chrome.gyp:installer_util',
+            '<(DEPTH)/chrome/chrome.gyp:installer_util_strings',
+            '<(DEPTH)/chrome/common_constants.gyp:common_constants',
+          ],
+          'include_dirs': [
+            '<(DEPTH)',
+          ],
+          'sources': [
+            'tools/validate_installation.rc',
+            'tools/validate_installation_main.cc',
+            'tools/validate_installation_resource.h',
+          ],
+        },
+        {
+          # A target that is outdated if any of the mini_installer test sources
+          # are modified.
+          'target_name': 'test_installer_sentinel',
+          'type': 'none',
+          'includes': [
+            '../test/mini_installer/test_installer.gypi',
+          ],
+          'actions': [
+            {
+              'action_name': 'touch_sentinel',
+              'variables': {
+                'touch_sentinel_py': '../tools/build/win/touch_sentinel.py',
+              },
+              'inputs': [
+                '<@(test_installer_sources)',  # from test_installer.gypi
+                '<(touch_sentinel_py)',
+              ],
+              'outputs': [
+                '<(SHARED_INTERMEDIATE_DIR)/chrome/installer/test_installer_sentinel',
+              ],
+              'action': ['python', '<(touch_sentinel_py)', '<@(_outputs)'],
+            },
+          ],
+        },
+      ],
+    }],
+  ],
+}