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

chrome/common/chrome_paths.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_paths.h"
 
 #include "base/command_line.h"
 #include "base/file_util.h"
 #include "base/logging.h"
 #include "base/path_service.h"
@@ skipping 224 matching lines @@
     case chrome::FILE_PDF_PLUGIN:
       if (!GetInternalPluginsDirectory(&cur))
         return false;
       cur = cur.Append(kInternalPDFPluginFileName);
       break;
     case chrome::FILE_NACL_PLUGIN:
       if (!GetInternalPluginsDirectory(&cur))
         return false;
       cur = cur.Append(kInternalNaClPluginFileName);
       break;
+      // TODO(jvoung): Do we want a default value or just the ability to
+      // override immediately when testing on bots to avoid race conditions?
+    case chrome::FILE_PNACL_COMPONENT:
+        return false;
+      break;
 #if defined(OS_POSIX) && !defined(OS_MACOSX)
     case chrome::FILE_NACL_HELPER:
       if (!PathService::Get(base::DIR_MODULE, &cur))
         return false;
       cur = cur.Append(kInternalNaClHelperFileName);
       break;
     case chrome::FILE_NACL_HELPER_BOOTSTRAP:
       if (!PathService::Get(base::DIR_MODULE, &cur))
         return false;
       cur = cur.Append(kInternalNaClHelperBootstrapFileName);
@@ skipping 138 matching lines @@
   return true;
 }
 
 // This cannot be done as a static initializer sadly since Visual Studio will
 // eliminate this object file if there is no direct entry point into it.
 void RegisterPathProvider() {
   PathService::RegisterProvider(PathProvider, PATH_START, PATH_END);
 }
 
 }  // namespace chrome