Consolidate manifest handler registration.

chrome/common/extensions/manifest_tests/extension_manifests_sandboxed_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_manifest_constants.h"
-#include "chrome/common/extensions/manifest_handler.h"
-#include "chrome/common/extensions/manifest_handlers/sandboxed_page_info.h"
 #include "chrome/common/extensions/manifest_tests/extension_manifest_test.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace errors = extension_manifest_errors;
 
 namespace extensions {
 
 class SandboxedPagesManifestTest : public ExtensionManifestTest {
- protected:
-  virtual void SetUp() OVERRIDE {
-    ExtensionManifestTest::SetUp();
-    (new SandboxedPageHandler)->Register();
-    (new CSPHandler(false))->Register();  // Not platform app.
-  }
 };
 
 TEST_F(SandboxedPagesManifestTest, SandboxedPages) {
   // Sandboxed pages specified, no custom CSP value.
   scoped_refptr<Extension> extension1(
       LoadAndExpectSuccess("sandboxed_pages_valid_1.json"));
 
   // No sandboxed pages.
   scoped_refptr<Extension> extension2(
       LoadAndExpectSuccess("sandboxed_pages_valid_2.json"));
@@ skipping 44 matching lines @@
     Testcase("sandboxed_pages_invalid_4.json",
         errors::kInvalidSandboxedPagesCSP),
     Testcase("sandboxed_pages_invalid_5.json",
         errors::kInvalidSandboxedPagesCSP)
   };
   RunTestcases(testcases, arraysize(testcases),
                EXPECT_TYPE_ERROR);
 }
 
 }  // namespace extensions