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

chrome/browser/browser_about_handler.cc

 // 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.
 
 #include "chrome/browser/browser_about_handler.h"
 
 #include <string>
 
 #include "base/command_line.h"
 #include "base/logging.h"
@@ skipping 20 matching lines @@
   chrome::kChromeUIDownloadsHost,
   chrome::kChromeUIExtensionsHost,
   chrome::kChromeUIFlagsHost,
   chrome::kChromeUIFlashHost,
   chrome::kChromeUIGpuInternalsHost,
   chrome::kChromeUIHistoryHost,
   chrome::kChromeUIIPCHost,
   chrome::kChromeUIInspectHost,
   chrome::kChromeUIMediaInternalsHost,
   chrome::kChromeUIMemoryHost,
+  chrome::kChromeUINaClHost,
   chrome::kChromeUINetInternalsHost,
   chrome::kChromeUINetworkViewCacheHost,
   chrome::kChromeUINewTabHost,
   chrome::kChromeUIOmniboxHost,
   chrome::kChromeUIPluginsHost,
   chrome::kChromeUIPolicyHost,
   chrome::kChromeUIPredictorsHost,
   chrome::kChromeUIProfilerHost,
   chrome::kChromeUIQuotaInternalsHost,
   chrome::kChromeUISettingsHost,
@@ skipping 111 matching lines @@
   return false;
 }
 
 std::vector<std::string> ChromePaths() {
   std::vector<std::string> paths;
   paths.reserve(arraysize(kChromePaths));
   for (size_t i = 0; i < arraysize(kChromePaths); i++)
     paths.push_back(kChromePaths[i]);
   return paths;
 }