Refactor skia_warnings_as_errors

gyp/libjpeg.gyp

 # Copyright 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.
 
 # This is a copy of ../third_party/externals/libjpeg/libjpeg.gyp , modified
 # such that all source paths point into that directory.
 # See http://code.google.com/p/skia/issues/detail?id=543 ('wrap libjpeg.gyp
 # from Chrome's libjpeg port, rather than making our own copy') for a better
 # long-term solution.
 
 {
   'variables': {
     'use_system_libjpeg%': 0,
+    'skia_warnings_as_errors': 0,
   },
   'conditions': [
     ['skia_os == "android"', {
       'targets': [
         {
           'target_name': 'libjpeg',
           'type': 'none',
           'dependencies': [
             'android_deps.gyp:jpeg',
           ],
@@ skipping 64 matching lines @@
                 '../third_party/externals/libjpeg/jquant2.c',
                 '../third_party/externals/libjpeg/jutils.c',
                 '../third_party/externals/libjpeg/jversion.h',
               ],
               'direct_dependent_settings': {
                 'include_dirs': [
                   '../third_party/externals/libjpeg',
                 ],
               },
               'conditions': [
-                ['OS!="win"', {
+                [ 'skia_os != "win"', {
                   'product_name': 'jpeg',
                   'cflags': [
                    '-Wno-main', # supresses warnings about naming things "main"
                   ],
                 }],
-                ['OS=="android"', {
-                  'cflags!': [
-                   '-fno-rtti', # supresses warnings about invalid option of non-C++ code
-                   '-Wall',
-                   '-Werror',
-                  ],
-                }],
-                ['OS in ["linux", "freebsd", "openbsd", "solaris", "nacl"]', {
-                  'cflags!': [
-                   '-Werror',
-                  ],
-                }],
               ],
             },
           ],
         }, {
           'targets': [
             {
               'target_name': 'libjpeg',
               'type': 'none',
               'direct_dependent_settings': {
                 'defines': [
@@ skipping 11 matching lines @@
       ],
     }],
   ],
 }
 
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