Define NDEBUG instead of SK_DEBUG/SK_RELEASE.

gyp/common.gypi

 # Copyright 2011 The Android Open Source Project
 #
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 #
 # This file is automatically included by gyp_skia when building any target.
 
 {
   'includes': [
     'common_variables.gypi',
@@ skipping 74 matching lines @@
           'defines': [
             'SK_USE_CDB',
           ],
         },
       ],
       [ 'skia_android_framework==0', {
         # These defines are not used for skia_android_framework, where we build
         # one makefile and allow someone to add SK_DEBUG etc for their own
         # debugging purposes.
         'configurations': {
-          'Debug': {
-            'defines': [
-              'SK_DEBUG',
-              'SK_DEVELOPER=1',
-            ],
-          },
-          'Release': {
-            'defines': [
-              'SK_RELEASE',
-            ],
-          },
+          'Debug':   { 'defines': [ 'SK_DEVELOPER=1' ] },
+          'Release': { 'defines': [ 'NDEBUG' ] },
           'Release_Developer': {
             'inherit_from': ['Release'],
-            'defines': [
-              'SK_DEVELOPER=1',
-            ],
+            'defines': [ 'SK_DEVELOPER=1' ],
           },
         },
       }],
     ],
   }, # end 'target_defaults'
 }