Set U_NOEXCEPT to empty to avoid C4577 from MSVC

icu.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.
 
 {
   'includes': [
     'icu.gypi',
   ],
   'variables': {
     'use_system_icu%': 0,
     'icu_use_data_file_flag%': 0,
     'want_separate_host_toolset%': 1,
   },
   'target_defaults': {
     'direct_dependent_settings': {
       'defines': [
         # Tell ICU to not insert |using namespace icu;| into its headers,
         # so that chrome's source explicitly has to use |icu::|.
         'U_USING_ICU_NAMESPACE=0',
         # We don't use ICU plugins and dyload is only necessary for them.
         # NaCl-related builds also fail looking for dlfcn.h when it's enabled.
         'U_ENABLE_DYLOAD=0',
+        # With exception disabled, MSVC emits C4577 warning on coming across
+        # 'noexcept'. See http://bugs.icu-project.org/trac/ticket/12406
+        # TODO(jshin): Remove this when updating to a newer version with this
+        # fixed.
+        'U_NOEXCEPT=',
       ],
     },
     'defines': [
       'U_USING_ICU_NAMESPACE=0',
       'HAVE_DLOPEN=0',
       # Only build encoding coverters and detectors necessary for HTML5.
       'UCONFIG_ONLY_HTML_CONVERSION=1',
       # No dependency on the default platform encoding.
       # Will cut down the code size.
       'U_CHARSET_IS_UTF8=1',
@@ skipping 564 matching lines @@
           },
           'includes': [
             '../../build/shim_headers.gypi',
           ],
           'toolsets': ['target'],
         },
       ], # targets
     }],
   ], # conditions
 }