Add a chrome://nacl page to show if NaCl is enabled and if PNaCl is installed.

chrome/chrome_browser.gypi

 # 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.
 
 {
   'targets': [
     {
       'target_name': 'browser',
       'type': 'static_library',
@@ skipping 4039 matching lines @@
         'browser/ui/webui/instant_ui.cc',
         'browser/ui/webui/instant_ui.h',
         'browser/ui/webui/media/media_internals_handler.cc',
         'browser/ui/webui/media/media_internals_handler.h',
         'browser/ui/webui/media/media_internals_proxy.cc',
         'browser/ui/webui/media/media_internals_proxy.h',
         'browser/ui/webui/media/media_internals_ui.cc',
         'browser/ui/webui/media/media_internals_ui.h',
         'browser/ui/webui/metrics_handler.cc',
         'browser/ui/webui/metrics_handler.h',
+        'browser/ui/webui/nacl_ui.cc',
+        'browser/ui/webui/nacl_ui.h',
         'browser/ui/webui/set_as_default_browser_ui.cc',
         'browser/ui/webui/set_as_default_browser_ui.h',
         'browser/ui/webui/net_internals/net_internals_ui.cc',
         'browser/ui/webui/net_internals/net_internals_ui.h',
         'browser/ui/webui/ntp/app_launcher_handler.cc',
         'browser/ui/webui/ntp/app_launcher_handler.h',
         'browser/ui/webui/ntp/favicon_webui_handler.cc',
         'browser/ui/webui/ntp/favicon_webui_handler.h',
         'browser/ui/webui/ntp/foreign_session_handler.cc',
         'browser/ui/webui/ntp/foreign_session_handler.h',
@@ skipping 380 matching lines @@
             'browser/nacl_host/nacl_broker_service_win.cc',
             'browser/nacl_host/nacl_broker_service_win.h',
             'browser/nacl_host/nacl_browser.cc',
             'browser/nacl_host/nacl_browser.h',
             'browser/nacl_host/nacl_process_host.cc',
             'browser/nacl_host/nacl_process_host.h',
             'browser/nacl_host/nacl_validation_cache.cc',
             'browser/nacl_host/nacl_validation_cache.h',
             'browser/nacl_host/pnacl_file_host.cc',
             'browser/nacl_host/pnacl_file_host.h',
+            'browser/ui/webui/nacl_ui.cc',
+            'browser/ui/webui/nacl_ui.h',
             'common/nacl_debug_exception_handler_win.cc',
             'common/nacl_debug_exception_handler_win.h',
           ],
           'dependencies': [
             '../native_client/src/trusted/service_runtime/service_runtime.gyp:sel',
           ],
         }],
         ['branding=="Chrome"', {
           'sources': [
             'browser/intents/internal/api_key_internal.cc',
@@ skipping 1070 matching lines @@
           'includes': [ '../build/jni_generator.gypi' ],
           'dependencies': [
             'android_jar_jni_headers',
           ],
         },
       ],
      },
     ],
   ],
 }