Consolidate manifest handler registration.

chrome/common/extensions/manifest_tests/extension_manifests_contentsecuritypolicy_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/csp_handler.h"
-#include "chrome/common/extensions/extension.h"
 #include "chrome/common/extensions/extension_manifest_constants.h"
 #include "chrome/common/extensions/manifest_tests/extension_manifest_test.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace errors = extension_manifest_errors;
 
 class ContentSecurityPolicyManifestTest : public ExtensionManifestTest {
-  virtual void SetUp() OVERRIDE {
-    ExtensionManifestTest::SetUp();
-    (new extensions::CSPHandler(false))->Register(); //  not platform app.
-  }
 };
 
 TEST_F(ContentSecurityPolicyManifestTest, InsecureContentSecurityPolicy) {
   Testcase testcases[] = {
     Testcase("insecure_contentsecuritypolicy_1.json",
         errors::kInsecureContentSecurityPolicy),
     Testcase("insecure_contentsecuritypolicy_2.json",
         errors::kInsecureContentSecurityPolicy),
     Testcase("insecure_contentsecuritypolicy_3.json",
         errors::kInsecureContentSecurityPolicy),
   };
   RunTestcases(testcases, arraysize(testcases), EXPECT_TYPE_ERROR);
 }