Consolidate manifest handler registration.

chrome/common/extensions/manifest_handlers/exclude_matches_manifest_unittest.cc

 // Copyright (c) 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 "chrome/common/extensions/extension.h"
-#include "chrome/common/extensions/manifest_handlers/content_scripts_handler.h"
 #include "chrome/common/extensions/manifest_tests/extension_manifest_test.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace extensions {
 
 class ExcludeMatchesManifestTest : public ExtensionManifestTest {
- protected:
-  virtual void SetUp() OVERRIDE {
-    ExtensionManifestTest::SetUp();
-    (new ContentScriptsHandler)->Register();
-  }
 };
 
 TEST_F(ExcludeMatchesManifestTest, ExcludeMatchPatterns) {
   Testcase testcases[] = {
     Testcase("exclude_matches.json"),
     Testcase("exclude_matches_empty.json")
   };
   RunTestcases(testcases, arraysize(testcases),
                EXPECT_TYPE_SUCCESS);
 
   Testcase testcases2[] = {
     Testcase("exclude_matches_not_list.json",
              "Invalid value for 'content_scripts[0].exclude_matches'."),
     Testcase("exclude_matches_invalid_host.json",
              "Invalid value for 'content_scripts[0].exclude_matches[0]': "
                  "Invalid host wildcard.")
   };
   RunTestcases(testcases2, arraysize(testcases2),
                EXPECT_TYPE_ERROR);
 }
 
 }  // namespace extensions