Add a component installer for Portable NaCl. Registration of installer is

chrome/common/chrome_switches.cc

 // Copyright (c) 2011 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/common/chrome_switches.h"
 
 #include "base/base_switches.h"
 #include "base/command_line.h"
 
 namespace switches {
@@ skipping 490 matching lines @@
 const char kEnableNTPBookmarkFeatures[]     = "enable-ntp-bookmark-features";
 
 // Enables content settings based on host *and* plug-in in the user
 // preferences.
 const char kEnableResourceContentSettings[] =
     "enable-resource-content-settings";
 
 // Enables panels (always on-top docked pop-up windows).
 const char kEnablePanels[]                  = "enable-panels";
 
+// Enables the installation and usage of Portable Native Client.
+const char kEnablePNaCl[]                    = "enable-pnacl";
+
 // Enables speculative TCP/IP preconnection.
 const char kEnablePreconnect[]              = "enable-preconnect";
 
 // Enables the IsSearchProviderInstalled and InstallSearchProvider with an
 // extra parameter to indicate if the provider should be the default.
 const char kEnableSearchProviderApiV2[]     = "enable-search-provider-api-v2";
 
 // Enables the use of the ShortcutsProvider for autocomplete results.
 const char kEnableShortcutsProvider[]       = "enable-shortcuts-provider";
 
@@ skipping 746 matching lines @@
 
 // -----------------------------------------------------------------------------
 // DO NOT ADD YOUR CRAP TO THE BOTTOM OF THIS FILE.
 //
 // You were going to just dump your switches here, weren't you? Instead, please
 // put them in alphabetical order above, or in order inside the appropriate
 // ifdef at the bottom. The order should match the header.
 // -----------------------------------------------------------------------------
 
 }  // namespace switches