Remove gconf build dependence for Chrome OS.

build/common.gypi

 # 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.
 
 # 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 302 matching lines @@
     # Enable new NPDevice API.
     'enable_new_npdevice_api%': 0,
 
     # Enable EGLImage support in OpenMAX
     'enable_eglimage%': 0,
 
     # Enable a variable used elsewhere throughout the GYP files to determine
     # whether to compile in the sources for the GPU plugin / process.
     'enable_gpu%': 1,
 
-    # Use GConf, the GNOME configuration system.
-    'use_gconf%': 1,
-
     # Use OpenSSL instead of NSS. Under development: see http://crbug.com/62803
     'use_openssl%': 0,
 
     # .gyp files or targets should set chromium_code to 1 if they build
     # Chromium-specific code, as opposed to external code.  This variable is
     # used to control such things as the set of warnings to enable, and
     # whether warnings are treated as errors.
     'chromium_code%': 0,
 
     # Set to 1 to compile with the built in pdf viewer.
@@ skipping 100 matching lines @@
       }],
 
       # Set the relative path from this file to the GYP file of the JPEG
       # library used by Chromium.
       ['use_libjpeg_turbo==1', {
         'libjpeg_gyp_path': '../third_party/libjpeg_turbo/libjpeg.gyp',
       }, {
         'libjpeg_gyp_path': '../third_party/libjpeg/libjpeg.gyp',
       }],  # use_libjpeg_turbo==1
 
+      # Use GConf, the GNOME configuration system.
+      ['chromeos==1', {
+        'use_gconf%': 0,
+      }, {
+        'use_gconf%': 1,
+      }],
+
       # Setup -D flags passed into grit.
       ['chromeos==1', {
         'grit_defines': ['-D', 'chromeos'],
       }],
       ['toolkit_views==1', {
         'grit_defines': ['-D', 'toolkit_views'],
       }],
       ['touchui==1', {
         'grit_defines': ['-D', 'touchui'],
       }],
@@ skipping 1056 matching lines @@
     # and therefore SYMROOT, needs to be set at the project level.
     'SYMROOT': '<(DEPTH)/xcodebuild',
   },
 }
 
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