Example solution for C++ 101 Exercise 4 (threads and task runners)

base/base.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.
 
 {
   'variables': {
     'chromium_code': 1,
   },
   'includes': [
     '../build/win_precompile.gypi',
@@ skipping 975 matching lines @@
           'dependencies': [
             # Needed to handle the #include chain:
             #   base/test/perf_test_suite.h
             #   base/test/test_suite.h
             #   gtk/gtk.h
             '../build/linux/system.gyp:gtk',
           ],
         }],
       ],
     },
+    {
+      'target_name': 'factor',
+      'type': 'executable',
+      'dependencies': [
+        'base',
+      ],
+      'sources': [
+        'cpp101/factor.cc',
+      ],
+    },
   ],
   'conditions': [
     ['OS!="ios"', {
       'targets': [
         {
           'target_name': 'check_example',
           'type': 'executable',
           'sources': [
             'check_example.cc',
           ],
@@ skipping 325 matching lines @@
             'base_unittests.isolate',
           ],
           'sources': [
             'base_unittests.isolate',
           ],
         },
       ],
     }],
   ],
 }