Consolidate manifest handler registration.

chrome/common/extensions/manifest_tests/extension_manifests_requirements_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/api/plugins/plugins_handler.h"
 #include "chrome/common/extensions/extension_manifest_constants.h"
 #include "chrome/common/extensions/manifest_handlers/requirements_handler.h"
 #include "chrome/common/extensions/manifest_tests/extension_manifest_test.h"
 #include "extensions/common/error_utils.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace errors = extension_manifest_errors;
 
 namespace extensions {
 
 class RequirementsManifestTest : public ExtensionManifestTest {
- protected:
-  virtual void SetUp() OVERRIDE {
-    ExtensionManifestTest::SetUp();
-    (new PluginsHandler)->Register();
-    (new RequirementsHandler)->Register();
-  }
 };
 
 TEST_F(RequirementsManifestTest, RequirementsInvalid) {
   Testcase testcases[] = {
     Testcase("requirements_invalid_requirements.json",
              errors::kInvalidRequirements),
     Testcase("requirements_invalid_keys.json", errors::kInvalidRequirements),
     Testcase("requirements_invalid_3d.json",
              ErrorUtils::FormatErrorMessage(
                  errors::kInvalidRequirement, "3D")),
@@ skipping 61 matching lines @@
   EXPECT_EQ(RequirementsInfo::GetRequirements(extension).npapi, false);
 
   extension = LoadAndExpectSuccess("requirements_npapi_plugins_empty.json");
   ASSERT_TRUE(extension.get());
   EXPECT_EQ(RequirementsInfo::GetRequirements(extension).webgl, false);
   EXPECT_EQ(RequirementsInfo::GetRequirements(extension).css3d, false);
   EXPECT_EQ(RequirementsInfo::GetRequirements(extension).npapi, true);
 }
 
 }  // namespace extensions