Adding the --load-component-extension flag.

chrome/browser/extensions/extension_file_browser_private_api.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/browser/extensions/extension_file_browser_private_api.h"
 
 #include "base/base64.h"
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/json/json_writer.h"
@@ skipping 357 matching lines @@
 
  private:
 
   // Grants file system access permissions to file browser component.
   bool SetupFileSystemAccessPermissions() {
     if (!extension_.get())
       return false;
 
     // Make sure that only component extension can access the entire
     // local file system.
-    if (extension_->location() != Extension::COMPONENT
-#ifndef NDEBUG
-      && !CommandLine::ForCurrentProcess()->HasSwitch(
-          switches::kExposePrivateExtensionApi)
-#endif
-        ) {
+    if (extension_->location() != Extension::COMPONENT) {
       NOTREACHED() << "Private method access by non-component extension "
                    << extension_->id();
       return false;
     }
 
     fileapi::FileSystemPathManager* path_manager =
         profile_->GetFileSystemContext()->path_manager();
     fileapi::ExternalFileSystemMountPointProvider* provider =
         path_manager->external_provider();
     if (!provider)
@@ skipping 1283 matching lines @@
   SET_STRING(IDS_FILE_BROWSER, ENQUEUE);
 #undef SET_STRING
 
   ChromeURLDataManager::DataSource::SetFontAndTextDirection(dict);
 
   dict->SetString("PLAY_MEDIA",
       l10n_util::GetStringUTF16(IDS_CONTENT_CONTEXT_PLAY));
 
   return true;
 }