Safe numeric library: base/numerics (copied from Chromium)

webrtc/base/base.gyp

 # Copyright (c) 2014 The WebRTC project authors. All Rights Reserved.
 #
 # Use of this source code is governed by a BSD-style license
 # that can be found in the LICENSE file in the root of the source
 # tree. An additional intellectual property rights grant can be found
 # in the file PATENTS.  All contributing project authors may
 # be found in the AUTHORS file in the root of the source tree.
 
 {
   'includes': [ '../build/common.gypi', ],
@@ skipping 95 matching lines @@
         'platform_thread.cc',
         'platform_thread.h',
         'platform_thread_types.h',
         'random.cc',
         'random.h',
         'rate_statistics.cc',
         'rate_statistics.h',
         'ratetracker.cc',
         'ratetracker.h',
         'refcount.h',
-        'safe_conversions.h',
-        'safe_conversions_impl.h',
         'scoped_ptr.h',
         'scoped_ref_ptr.h',
         'stringencode.cc',
         'stringencode.h',
         'stringutils.cc',
         'stringutils.h',
         'systeminfo.cc',
         'systeminfo.h',
         'template_util.h',
         'thread_annotations.h',
@@ skipping 22 matching lines @@
           ],
         }],
       ],
     },
     {
       'target_name': 'rtc_base',
       'type': 'static_library',
       'dependencies': [
         '<(webrtc_root)/common.gyp:webrtc_common',
         'rtc_base_approved',
+        'safe_numerics',
       ],
       'export_dependent_settings': [
         'rtc_base_approved',
       ],
       'defines': [
         'FEATURE_ENABLE_SSL',
         'SSL_USE_OPENSSL',
         'HAVE_OPENSSL_SSL_H',
         'LOGGING=1',
       ],
@@ skipping 320 matching lines @@
             'optionsfile.cc',
             'optionsfile.h',
             'posix.cc',
             'posix.h',
             'profiler.cc',
             'profiler.h',
             'proxyserver.cc',
             'proxyserver.h',
             'referencecountedsingletonfactory.h',
             'rollingaccumulator.h',
-            'safe_conversions.h',
-            'safe_conversions_impl.h',
             'scopedptrcollection.h',
             'sec_buffer.h',
             'sslconfig.h',
             'sslroots.h',
             'testbase64.h',
             'testclient.cc',
             'testclient.h',
             'transformadapter.cc',
             'transformadapter.h',
             'versionparsing.cc',
@@ skipping 230 matching lines @@
         }],
       ],
     },
     {
      'target_name': 'gtest_prod',
       'type': 'static_library',
       'sources': [
         'gtest_prod_util.h',
       ],
     },
+    {
+      # GN version: webrtc/base:safe_numerics
+      'target_name': 'safe_numerics',
+      'type': 'static_library',
+      'dependencies': [
+        'rtc_base_approved',
+      ],
+      'sources': [
+        'numerics/safe_conversions.h',
+        'numerics/safe_conversions_impl.h',
+        'numerics/safe_math.h',
+        'numerics/safe_math_impl.h',
+      ],
+    },
   ],
 }