Use SSLClientSocketNSS on Mac OS X. ...

base/base.gypi

Index: base/base.gypi
===================================================================
--- base/base.gypi	(revision 48533)
+++ base/base.gypi	(working copy)
@@ -331,15 +331,8 @@
               'sources/': [ ['exclude', '_openbsd\\.cc$'] ],
             },
           ],
-          [ 'OS == "mac"', {
+          [ 'OS != "mac"', {
               'sources!': [
-                # TODO(wtc): Remove nss_util.{cc,h} when http://crbug.com/30689
-                # is fixed.
-                'nss_util.cc',
-                'nss_util.h',
-              ],
-          }, {  # OS != "mac"
-              'sources!': [
                 'crypto/cssm_init.cc',
                 'crypto/cssm_init.h',
               ],
@@ -452,11 +445,12 @@
               ],
             },
         },],
-        [ 'OS == "win"', {
+        [ 'OS == "mac" or OS == "win"', {
             'dependencies': [
               '../third_party/nss/nss.gyp:nss',
             ],
-        }, {  # OS != "win"
+        },],
+        [ 'OS != "win"', {
             'dependencies': ['../third_party/libevent/libevent.gyp:libevent'],
             'sources!': [
               'third_party/purify/pure_api.c',