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

chrome/common/extensions/api/i18n/default_locale_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/api/i18n/default_locale_handler.h"
 #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 "testing/gtest/include/gtest/gtest.h"
 
 namespace extensions {
 
 class DefaultLocaleManifestTest : public ExtensionManifestTest {
   virtual void SetUp() OVERRIDE {
     ExtensionManifestTest::SetUp();
-    ManifestHandler::Register(keys::kDefaultLocale,
-                              new DefaultLocaleHandler);
+    ManifestHandler::Register(extension_manifest_keys::kDefaultLocale,
+                              make_linked_ptr(new DefaultLocaleHandler));
   }
 };
 
 TEST_F(DefaultLocaleManifestTest, DefaultLocale) {
   LoadAndExpectError("default_locale_invalid.json",
-                     errors::kInvalidDefaultLocale);
+                     extension_manifest_errors::kInvalidDefaultLocale);
 
   scoped_refptr<Extension> extension(
       LoadAndExpectSuccess("default_locale_valid.json"));
   EXPECT_EQ("de-AT", LocaleInfo::GetDefaultLocale(extension));
 }
 
 }  // namespace extensions