Consolidate manifest handler registration.

chrome/common/extensions/api/page_launcher/page_launcher_manifest_unittest.cc

 // Copyright 2013 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 <string>
 
 #include "base/compiler_specific.h"
 #include "chrome/common/extensions/api/extension_action/action_info.h"
-#include "chrome/common/extensions/api/page_launcher/page_launcher_handler.h"
 #include "chrome/common/extensions/background_info.h"
 #include "chrome/common/extensions/extension_icon_set.h"
 #include "chrome/common/extensions/manifest_tests/extension_manifest_test.h"
 
 namespace extensions {
 
 class PageLauncherManifestTest : public ExtensionManifestTest {
-  virtual void SetUp() OVERRIDE {
-    ExtensionManifestTest::SetUp();
-    (new PageLauncherHandler)->Register();
-    // Required to be recognized as a platform app.
-    (new BackgroundManifestHandler)->Register();
-  }
-
+ protected:
   virtual char const* test_data_dir() OVERRIDE {
     return "page_launcher";
   }
 };
 
 TEST_F(PageLauncherManifestTest, AppPageLauncherNotPresent) {
   scoped_refptr<Extension> extension =
       LoadAndExpectSuccess("app_page_launcher_not_present.json");
   const ActionInfo* page_launcher_info =
       ActionInfo::GetPageLauncherInfo(extension.get());
@@ skipping 12 matching lines @@
 
 TEST_F(PageLauncherManifestTest, ExtensionWithPageLauncher) {
   scoped_refptr<Extension> extension =
       LoadAndExpectSuccess("extension_page_launcher_present.json");
   const ActionInfo* page_launcher_info =
       ActionInfo::GetPageLauncherInfo(extension.get());
   ASSERT_EQ(NULL, page_launcher_info);
 }
 
 }  // namespace extensions