Consolidate manifest handler registration.

chrome/common/extensions/api/identity/extension_manifests_auth_unittest.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/common/extensions/manifest_tests/extension_manifest_test.h"
 
 #include "testing/gtest/include/gtest/gtest.h"
 #include "chrome/common/extensions/api/identity/oauth2_manifest_handler.h"
 #include "chrome/common/extensions/extension_manifest_constants.h"
 
 namespace keys = extension_manifest_keys;
 
 namespace extensions {
 
 class OAuth2ManifestTest : public ExtensionManifestTest {
- protected:
-  virtual void SetUp() OVERRIDE {
-    ExtensionManifestTest::SetUp();
-    (new OAuth2ManifestHandler)->Register();
-  }
 };
 
 TEST_F(OAuth2ManifestTest, OAuth2SectionParsing) {
   base::DictionaryValue base_manifest;
 
   base_manifest.SetString(keys::kName, "test");
   base_manifest.SetString(keys::kVersion, "0.1");
   base_manifest.SetInteger(keys::kManifestVersion, 2);
   base_manifest.SetString(keys::kOAuth2ClientId, "client1");
   base::ListValue* scopes = new base::ListValue();
@@ skipping 48 matching lines @@
         extension->install_warnings()[0];
     EXPECT_EQ("'oauth2' is only allowed for extensions, legacy packaged apps "
                   "and packaged apps, and this is a hosted app.",
               warning.message);
     EXPECT_EQ("", OAuth2Info::GetOAuth2Info(extension).client_id);
     EXPECT_TRUE(OAuth2Info::GetOAuth2Info(extension).scopes.empty());
   }
 }
 
 }  // namespace extensions