Add base/parse_number.h to generalize number parsing done in //net.

net/net.gypi

 # Copyright 2014 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.
 
 # This file is shared between the regular GYP build, the NaCl GYP build, and
 # the GN build. For GN support, it must have no conditionals or anything like
 # that beyond the simple one-level-deep dictionary of values.
 {
   'variables': {
     # Subset of net source files that are compiled for NaCl (net_nacl target).
@@ skipping 35 matching lines @@
       'base/net_export.h',
       'base/net_module.cc',
       'base/net_module.h',
       'base/net_string_util.h',
       'base/network_interfaces.cc',
       'base/network_interfaces.h',
       'base/network_interfaces_posix.cc',
       'base/openssl_private_key_store.h',
       'base/openssl_private_key_store_android.cc',
       'base/openssl_private_key_store_memory.cc',
+      'base/parse_number.cc',
+      'base/parse_number.h',
       'base/port_util.cc',
       'base/port_util.h',
       'base/rand_callback.h',
       'base/registry_controlled_domains/registry_controlled_domain.cc',
       'base/registry_controlled_domains/registry_controlled_domain.h',
       'base/sockaddr_storage.cc',
       'base/sockaddr_storage.h',
       'base/socket_performance_watcher.cc',
       'base/socket_performance_watcher.h',
       'base/socket_performance_watcher_factory.h',
@@ skipping 1290 matching lines @@
       'base/keygen_handler_unittest.cc',
       'base/layered_network_delegate_unittest.cc',
       'base/lookup_string_in_fixed_set_unittest.cc',
       'base/mime_sniffer_unittest.cc',
       'base/mime_util_unittest.cc',
       'base/network_activity_monitor_unittest.cc',
       'base/network_change_notifier_unittest.cc',
       'base/network_change_notifier_win_unittest.cc',
       'base/network_interfaces_unittest.cc',
       'base/network_quality_estimator_unittest.cc',
+      'base/parse_number_unittest.cc',
       'base/port_util_unittest.cc',
       'base/prioritized_dispatcher_unittest.cc',
       'base/priority_queue_unittest.cc',
       'base/registry_controlled_domains/registry_controlled_domain_unittest.cc',
       'base/sdch_dictionary_unittest.cc',
       'base/sdch_manager_unittest.cc',
       'base/stale_while_revalidate_experiment_domains_unittest.cc',
       'base/static_cookie_policy_unittest.cc',
       'base/test_completion_callback_unittest.cc',
       'base/test_proxy_delegate.cc',
@@ skipping 629 matching lines @@
       'docs/bug-triage-labels.md',
       'docs/bug-triage-suggested-workflow.md',
       'docs/code-patterns.md',
       'docs/crash-course-in-net-internals.md',
       'docs/life-of-a-url-request.md',
       'sdch/README.md',
     ],
     'net_docs_output_dir': '<(PRODUCT_DIR)/net/docs',
   }
 }