Rename use_nss to use_nss_certs in gyp and grit.

chrome/chrome_browser.gypi

 # Copyright 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': {
     # All .cc, .h, .m, and .mm files under browser except for:
     # * tests and mocks.
     # * code below browser/chromeos
     # * code below browser/extensions
@@ skipping 3405 matching lines @@
         ['os_posix == 1 and OS != "mac" and OS != "ios"', {
           'sources': [
             'app/chrome_crash_reporter_client.cc',
             'app/chrome_crash_reporter_client.h',
           ],
           'dependencies': [
             '../components/components.gyp:breakpad_host',
             '../components/components.gyp:crash_component',
           ],
         }],
-        ['use_nss==1', {
+        ['use_nss_certs==1', {
           'sources': [ '<@(chrome_browser_nss_sources)' ],
           'conditions': [
             ['chromeos==1', {
                'sources!': [ 'browser/net/nss_context_linux.cc' ],
               }, { # chromeos==0
                'sources!': [ 'browser/net/nss_context_chromeos.cc' ],
               }],
           ],
         }],
         ['notifications==1', {
@@ skipping 409 matching lines @@
           'variables': {
             'proto_in_dir': 'browser/sync_file_system/drive_backend',
             'proto_out_dir': 'chrome/browser/sync_file_system/drive_backend',
           },
           'includes': [ '../build/protoc.gypi' ]
         },
       ],
     },],
   ],
 }