Fix mini_installer for Metro resources.

build/common.gypi

 # 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.
 
 # IMPORTANT:
 # Please don't directly include this file if you are building via gyp_chromium,
 # since gyp_chromium is automatically forcing its inclusion.
 {
   # Variables expected to be overriden on the GYP command line (-D) or by
   # ~/.gyp/include.gypi.
@@ skipping 26 matching lines @@
 
           # Disable Virtual keyboard support by default.
           'use_virtual_keyboard%': 0,
 
           # Disable viewport meta tag by default.
           'enable_viewport%': 0,
 
           # Enable HiDPI support.
           'enable_hidpi%': 0,
 
-          # Enable Metro support.
+          # Enable inclusion (and therefore use) of touch-optimized assets in the build.

[grt (UTC plus 2), 2012/05/02 13:17:38]

nit: 80 columns

+          # TODO(joi): Rename to enable_touch_assets.
           'enable_metro%': 0,
         },
         # Copy conditionally-set variables out one scope.
         'chromeos%': '<(chromeos)',
         'use_aura%': '<(use_aura)',
         'use_ash%': '<(use_ash)',
         'enable_dip%': '<(enable_dip)',
         'use_openssl%': '<(use_openssl)',
         'use_virtual_keyboard%': '<(use_virtual_keyboard)',
         'enable_viewport%': '<(enable_viewport)',
@@ skipping 30 matching lines @@
           ['OS=="win" or chromeos==1 or use_aura==1', {
             'toolkit_views%': 1,
           }, {
             'toolkit_views%': 0,
           }],
 
           # Enable HiDPI on Mac OS.
           ['OS=="mac"', {
             'enable_hidpi%': 1,
           }],
+
+          # Touch-optimized resources are enabled by default on Windows.
+          ['OS=="win"', {
+            'enable_metro%': 1,

[grt (UTC plus 2), 2012/05/02 13:17:38]

this will cause theme_resources_metro_1x.pak to start appearing in official
builds (starting with canaries) immediately.  is this desired?

+          }],
         ],
       },
 
       # Copy conditionally-set variables out one scope.
       'chromeos%': '<(chromeos)',
       'host_arch%': '<(host_arch)',
       'toolkit_views%': '<(toolkit_views)',
       'use_aura%': '<(use_aura)',
       'use_ash%': '<(use_ash)',
       'enable_dip%': '<(enable_dip)',
@@ skipping 2925 matching lines @@
     # settings in target dicts.  SYMROOT is a special case, because many other
     # Xcode variables depend on it, including variables such as
     # PROJECT_DERIVED_FILE_DIR.  When a source group corresponding to something
     # like PROJECT_DERIVED_FILE_DIR is added to a project, in order for the
     # files to appear (when present) in the UI as actual files and not red
     # red "missing file" proxies, the correct path to PROJECT_DERIVED_FILE_DIR,
     # and therefore SYMROOT, needs to be set at the project level.
     'SYMROOT': '<(DEPTH)/xcodebuild',
   },
 }