Fix the extension activity log UI.

chrome/browser/ui/webui/extensions/extensions_ui.cc

 // Copyright (c) 2012 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/extensions/extensions_ui.h"
 
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/ui/webui/chrome_url_data_manager.h"
 #include "chrome/browser/ui/webui/chrome_web_ui_data_source.h"
 #include "chrome/browser/ui/webui/extensions/command_handler.h"
 #include "chrome/browser/ui/webui/extensions/extension_settings_handler.h"
 #include "chrome/browser/ui/webui/extensions/install_extension_handler.h"
 #include "chrome/browser/ui/webui/extensions/pack_extension_handler.h"
+#include "chrome/browser/ui/webui/generic_handler.h"
 #include "chrome/browser/ui/webui/shared_resources_data_source.h"
 #include "chrome/common/url_constants.h"
 #include "content/public/browser/web_ui.h"
 #include "grit/browser_resources.h"
 
 namespace {
 
 ChromeWebUIDataSource* CreateExtensionsHTMLSource() {
   ChromeWebUIDataSource* source =
       new ChromeWebUIDataSource(chrome::kChromeUIExtensionsFrameHost);
@@ skipping 26 matching lines @@
 
   extensions::CommandHandler* commands_handler =
       new extensions::CommandHandler();
   commands_handler->GetLocalizedValues(source->localized_strings());
   web_ui->AddMessageHandler(commands_handler);
 
   InstallExtensionHandler* install_extension_handler =
       new InstallExtensionHandler();
   install_extension_handler->GetLocalizedValues(source->localized_strings());
   web_ui->AddMessageHandler(install_extension_handler);
+
+  web_ui->AddMessageHandler(new GenericHandler());
 }
 
 ExtensionsUI::~ExtensionsUI() {
 }