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

chrome/common/chrome_switches.h

 // 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.
 
 // Defines all the command-line switches used by Chrome.
 
 #ifndef CHROME_COMMON_CHROME_SWITCHES_H_
 #define CHROME_COMMON_CHROME_SWITCHES_H_
 #pragma once
 
@@ skipping 134 matching lines @@
 extern const char kEnableIPv6[];
 extern const char kEnableIPCFuzzing[];
 extern const char kEnableIPPooling[];
 extern const char kEnableLazyBackgroundPages[];
 extern const char kEnableMacCookies[];
 extern const char kEnableMemoryInfo[];
 extern const char kEnableNaCl[];
 extern const char kEnableNaClDebug[];
 extern const char kEnablePanels[];
 extern const char kEnablePlatformApps[];
+extern const char kEnablePnacl[];
 extern const char kEnablePreconnect[];
 extern const char kEnableProfiling[];
 extern const char kEnableRestoreSessionState[];
 extern const char kEnableResourceContentSettings[];
 extern const char kEnableSdch[];
 extern const char kEnableSearchProviderApiV2[];
 extern const char kEnableSmoothScrolling[];
 // TODO(kalman): Add to about:flags when UI for syncing extension settings has
 // been figured out.
 extern const char kEnableSyncExtensionSettings[];
@@ skipping 222 matching lines @@
 bool IsPrintPreviewEnabled();
 
 bool IsInBrowserThumbnailingEnabled();
 
 // DON'T ADD RANDOM STUFF HERE. Put it in the main section above in
 // alphabetical order, or in one of the ifdefs (also in order in each section).
 
 }  // namespace switches
 
 #endif  // CHROME_COMMON_CHROME_SWITCHES_H_