simplify the way we disable sanitizers for yasm

gyp/yasm.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.
 
 # The yasm build process creates a slew of small C subprograms that
 # dynamically generate files at various point in the build process.  This makes
 # the build integration moderately complex.
 #
 # There are three classes of dynamically generated files:
 #   1) C source files that should be included in the build (eg., lc3bid.c)
@@ skipping 44 matching lines @@
     # Locations for various generated artifacts.
     'shared_generated_dir': '<(SHARED_INTERMEDIATE_DIR)/third_party/yasm',
     'generated_dir': '<(INTERMEDIATE_DIR)/third_party/yasm',
 
     # Various files referenced by multiple targets.
     'version_file': 'version.mac',  # Generated by genversion.
     'genmodule_source': 'genmodule_outfile.c',
   },
   'target_defaults': {
     # Silence warnings in libc++ builds (C code doesn't need this flag).
-    'ldflags!': [ '-stdlib=libc++', '-fsanitize=address,bool,integer-divide-by-zero,null,object-size,return,nonnull-attribute,returns-nonnull-attribute,signed-integer-overflow,unreachable,vla-bound' ],
+    'ldflags!': [ '-stdlib=libc++', '-fsanitize=<(skia_sanitizer)' ],
     # https://crbug.com/489901
-    'cflags!': [ '-fsanitize=bounds', '-fsanitize=address,bool,integer-divide-by-zero,null,object-size,return,nonnull-attribute,returns-nonnull-attribute,signed-integer-overflow,unreachable,vla-bound' ],
+    'cflags!': [ '-fsanitize=bounds', '-fsanitize=<(skia_sanitizer)' ],
     'libraries!': [ '-llog', ],
   },
   'targets': [
     {
       'target_name': 'yasm',
       'type': 'executable',
       'toolsets': ['host'],
       'dependencies': [
         'config_sources',
         'genmacro',
@@ skipping 561 matching lines @@
         '-std=gnu99',
       ],
       'cflags!': [
         '-mfpu=neon',
         '-mthumb',
         '-march=armv7-a',
       ],
     },
   ],
 }