printing: Invoke cups-config from the sysroot if one is being used.

printing/printing.gyp

 # 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.
 
 {
   'variables': {
     'chromium_code': 1,
   },
   'targets': [
     {
@@ skipping 121 matching lines @@
           'sources': [
             'printing_context_no_system_dialog.cc',
             'printing_context_no_system_dialog.h',
           ],
         }],
         ['use_cups==1', {
           'dependencies': [
             'cups',
           ],
           'variables': {
-            'cups_version': '<!(cups-config --api-version)',
+            'cups_version': '<!(python cups_config_helper.py --api-version <(sysroot))',
           },
           'conditions': [
             ['cups_version in ["1.6", "1.7"]', {
               'cflags': [
                 # CUPS 1.6 deprecated the PPD APIs, but we will stay with this
                 # API for now as supported Linux and Mac OS'es are still using
                 # older versions of CUPS. More info: crbug.com/226176
                 '-Wno-deprecated-declarations',
                 # CUPS 1.7 deprecates httpConnectEncrypt(), see the mac section
                 # below.
@@ skipping 184 matching lines @@
             '../build/isolate.gypi',
           ],
           'sources': [
             'printing_unittests.isolate',
           ],
         },
       ],
     }],
   ]
 }