Allow manifest handlers to declare keys they depend on that must be parsed before them.

chrome/common/extensions/manifest_tests/extension_manifests_options_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/extension_manifest_constants.h"
 #include "chrome/common/extensions/manifest_handler.h"
 #include "chrome/common/extensions/manifest_tests/extension_manifest_test.h"
 #include "chrome/common/extensions/manifest_url_handler.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace errors = extension_manifest_errors;
 
 class OptionsPageManifestTest : public ExtensionManifestTest {
   virtual void SetUp() OVERRIDE {
     ExtensionManifestTest::SetUp();
-    extensions::ManifestHandler::Register(extension_manifest_keys::kOptionsPage,
-                                          new extensions::OptionsPageHandler);
+    extensions::ManifestHandler::Register(
+        extension_manifest_keys::kOptionsPage,
+        make_linked_ptr(new extensions::OptionsPageHandler));
   }
 };
 
 TEST_F(OptionsPageManifestTest, OptionsPageInApps) {
   scoped_refptr<extensions::Extension> extension;
 
   // Allow options page with absolute URL in hosted apps.
   extension = LoadAndExpectSuccess("hosted_app_absolute_options.json");
   EXPECT_STREQ(
       "http",
@@ skipping 15 matching lines @@
     Testcase("hosted_app_file_options.json",
              errors::kInvalidOptionsPageInHostedApp),
 
     // Forbid absolute URL for options page in packaged apps.
     Testcase("packaged_app_absolute_options.json",
              errors::kInvalidOptionsPageExpectUrlInPackage)
   };
   RunTestcases(testcases, arraysize(testcases),
                EXPECT_TYPE_ERROR);
 }