Save a little work when fetching the default title by only checking the name...

chrome/common/extensions/extension_constants.cc

 // Copyright (c) 2009 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_constants.h"
 
 namespace extension_manifest_keys {
 
 const wchar_t* kBackground = L"background_page";
 const wchar_t* kBrowserAction = L"browser_action";
@@ skipping 80 matching lines @@
     "Invalid value for 'content_scripts[*].matches. There must be at least one "
     "match specified.";
 const char* kInvalidMatch =
     "Invalid value for 'content_scripts[*].matches[*]'.";
 const char* kInvalidMatches =
     "Required value 'content_scripts[*].matches' is missing or invalid.";
 const char* kInvalidName =
     "Required value 'name' is missing or invalid.";
 const char* kInvalidPageAction =
     "Invalid value for 'page_action'.";
+const char* kInvalidPageActionName =
+    "Invalid value for 'page_action.name'.";
 const char* kInvalidPageActionIconPath =
     "Invalid value for 'page_action.default_icon'.";
 const char* kInvalidPageActionsList =
     "Invalid value for 'page_actions'.";
 const char* kInvalidPageActionsListSize =
     "Invalid value for 'page_actions'. There can be only one.";
 const char* kInvalidPageActionId =
     "Required value 'id' is missing or invalid.";
 const char* kInvalidPageActionDefaultTitle =
-    "Required value 'default_title' is missing or invalid.";
+    "Invalid value for 'default_title'.";
 const char* kInvalidPageActionPopup =
     "Invalid type for page action popup.";
 const char* kInvalidPageActionPopupHeight =
     "Invalid value for page action popup height [*].";
 const char* kInvalidPageActionPopupPath =
     "Invalid value for page action popup path [*].";
 const char* kInvalidPageActionTypeValue =
     "Invalid value for 'page_actions[*].type', expected 'tab' or 'permanent'.";
 const char* kInvalidPermissions =
     "Required value 'permissions' is missing or invalid.";
@@ skipping 51 matching lines @@
     "An extension cannot have both a page action and a browser action.";
 const char* kThemesCannotContainExtensions =
     "A theme cannot contain extensions code.";
 const char* kLocalesNoDefaultLocaleSpecified =
     "Localization used, but default_locale wasn't specified in the manifest.";
 const char* kLocalesNoValidLocaleNamesListed =
     "No valid locale name could be found in _locales directory.";
 const char* kInvalidOptionsPage =
     "Invalid value for 'options_page'.";
 }  // namespace extension_manifest_errors