get iOS building again

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_GPU=<(skia_gpu)',
     'SK_SUPPORT_OPENCL=<(skia_opencl)',
     'SK_FORCE_DISTANCEFIELD_FONTS=<(skia_force_distancefield_fonts)',
   ],
   'conditions' : [
@@ skipping 515 matching lines @@
             },
           },
           'Release': {
             'xcode_settings': {
               'GCC_OPTIMIZATION_LEVEL': '<(skia_release_optimization_level)',
             },
             'defines': [ 'NDEBUG' ],
           },
         },
         'xcode_settings': {
-          'ARCHS': ['armv6', 'armv7'],
+          'ARCHS': ['armv7'],
           'CODE_SIGNING_REQUIRED': 'NO',
           'CODE_SIGN_IDENTITY[sdk=iphoneos*]': '',
           'IPHONEOS_DEPLOYMENT_TARGET': '<(ios_sdk_version)',
           'SDKROOT': 'iphoneos',
           'TARGETED_DEVICE_FAMILY': '1,2',
           'OTHER_CPLUSPLUSFLAGS': [
             '-fvisibility=hidden',
             '-fvisibility-inlines-hidden',
           ],
           'GCC_THUMB_SUPPORT': 'NO',
@@ skipping 56 matching lines @@
       'defines': [
         'SK_USE_POSIX_THREADS',
       ],
     }],
   ], # end 'conditions'
   # The Xcode SYMROOT must be at the root. See build/common.gypi in chromium for more details
   'xcode_settings': {
     'SYMROOT': '<(DEPTH)/xcodebuild',
   },
 }