Optionally show component extensions in options.

chrome/browser/ui/webui/options/extension_settings_handler.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/ui/webui/options/extension_settings_handler.h"
 
 #include "base/auto_reset.h"
 #include "base/base64.h"
 #include "base/bind.h"
 #include "base/bind_helpers.h"
+#include "base/command_line.h"
 #include "base/file_util.h"
 #include "base/string_number_conversions.h"
 #include "base/utf_string_conversions.h"
 #include "base/values.h"
 #include "base/version.h"
 #include "chrome/browser/debugger/devtools_window.h"
 #include "chrome/browser/extensions/crx_installer.h"
 #include "chrome/browser/extensions/extension_disabled_infobar_delegate.h"
 #include "chrome/browser/extensions/extension_service.h"
 #include "chrome/browser/extensions/extension_updater.h"
 #include "chrome/browser/extensions/extension_warning_set.h"
 #include "chrome/browser/google/google_util.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/tab_contents/background_contents.h"
 #include "chrome/browser/ui/webui/extension_icon_source.h"
+#include "chrome/common/chrome_switches.h"
+#include "chrome/common/chrome_view_types.h"
 #include "chrome/common/extensions/extension.h"
 #include "chrome/common/pref_names.h"
 #include "chrome/common/url_constants.h"
-#include "chrome/common/chrome_view_types.h"
 #include "content/browser/browsing_instance.h"
 #include "content/browser/renderer_host/render_view_host.h"
 #include "content/browser/tab_contents/tab_contents.h"
 #include "content/browser/tab_contents/tab_contents_view.h"
 #include "content/public/browser/notification_service.h"
 #include "content/public/browser/notification_types.h"
 #include "grit/browser_resources.h"
 #include "grit/chromium_strings.h"
 #include "grit/generated_resources.h"
 #include "grit/theme_resources.h"
 #include "ui/base/l10n/l10n_util.h"
 #include "ui/base/resource/resource_bundle.h"
 
 namespace {
 
 bool ShouldShowExtension(const Extension* extension) {
   // Don't show themes since this page's UI isn't really useful for themes.
   if (extension->is_theme())
     return false;
 
   // Don't show component extensions because they are only extensions as an
   // implementation detail of Chrome.
-  if (extension->location() == Extension::COMPONENT)
+  if (extension->location() == Extension::COMPONENT &&
+      !CommandLine::ForCurrentProcess()->HasSwitch(
+        switches::kShowComponentExtensionsInOptions))
     return false;
 
   // Always show unpacked extensions and apps.
   if (extension->location() == Extension::LOAD)
     return true;
 
   // Unless they are unpacked, never show hosted apps.
   if (extension->is_hosted_app())
     return false;
 
@@ skipping 727 matching lines @@
         chrome::VIEW_TYPE_EXTENSION_DIALOG == host_type)
       continue;
 
     GURL url = host->delegate()->GetURL();
     RenderProcessHost* process = host->process();
     result->push_back(
         ExtensionPage(url, process->id(), host->routing_id(),
                       process->browser_context()->IsOffTheRecord()));
   }
 }