Enable ASAN build

gyp/common_conditions.gypi

 # conditions used in both common.gypi and skia.gyp in chromium
 #
 {
   'defines': [
     'SK_ALLOW_STATIC_GLOBAL_INITIALIZERS=<(skia_static_initializers)',
 #    'SK_SUPPORT_HINTING_SCALE_FACTOR',
   ],
   'conditions' : [
     [ 'skia_gpu == 1',
       {
@@ skipping 192 matching lines @@
               [ 'skia_arch_width == 32', {
                 'cflags': [
                   '-m32',
                 ],
                 'ldflags': [
                   '-m32',
                 ],
               }],
             ],
           }],
+          [ 'skia_asan_build', {
+            'cflags': [
+              '-fsanitize=address',
+              '-fno-omit-frame-pointer',
+            ],
+            'ldflags': [
+              '-fsanitize=address',
+            ],
+          }],
         ],
       },
     ],
 
     [ 'skia_os == "mac"',
       {
         'variables': {
           'mac_sdk%': '<!(python <(DEPTH)/tools/find_mac_sdk.py 10.6)',
         },
         'defines': [
@@ skipping 213 matching lines @@
   'xcode_settings': {
     'SYMROOT': '<(DEPTH)/xcodebuild',
   },
 }
 
 # Local Variables:
 # tab-width:2
 # indent-tabs-mode:nil
 # End:
 # vim: set expandtab tabstop=2 shiftwidth=2: