Disable deprecation warnings for CUPS as the compile fails when using CUPS 1.6

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 144 matching lines @@
         ['chromeos==1 or use_aura==1',{
           '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)',
+          },
           'conditions': [
             ['OS!="mac"', {
               'dependencies': [
                 '../build/linux/system.gyp:libgcrypt',
               ],
             }],
+            ['cups_version=="1.6"', {
+              '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',
+              ],
+            }],
           ],
           'defines': [
             # PRINT_BACKEND_AVAILABLE disables the default dummy implementation
             # of the print backend and enables a custom implementation instead.
             'PRINT_BACKEND_AVAILABLE',
           ],
           'sources': [
             'backend/cups_helper.cc',
             'backend/cups_helper.h',
             'backend/print_backend_cups.cc',
@@ skipping 107 matching lines @@
                   '<!@(python cups_config_helper.py --cflags)',
                 ],
               }],
             ],
           },
         }],
       ],
     },
   ],
 }