Move Extension::GetBasicInfo to a static helper.

chrome/common/extensions/extension_constants.cc

Index: chrome/common/extensions/extension_constants.cc
diff --git a/chrome/common/extensions/extension_constants.cc b/chrome/common/extensions/extension_constants.cc
index b96cdba4abf11c844f3a18ffc15669e896a52e7f..f24578273b13c89f2eb391cc5aadc3e9728914fb 100644
--- a/chrome/common/extensions/extension_constants.cc
+++ b/chrome/common/extensions/extension_constants.cc
@@ -108,22 +108,6 @@ const char kModulesDir[] = "_modules";
 
 }  // namespace extension_filenames
 
-// These must match the values expected by the chrome.management extension API.
-namespace extension_info_keys {
-  const char kDescriptionKey[] = "description";
-  const char kEnabledKey[] = "enabled";
-  const char kHomepageUrlKey[] = "homepageUrl";
-  const char kIdKey[] = "id";
-  const char kNameKey[] = "name";
-  const char kKioskEnabledKey[] = "kioskEnabled";
-  const char kOfflineEnabledKey[] = "offlineEnabled";
-  const char kOptionsUrlKey[] = "optionsUrl";
-  const char kDetailsUrlKey[] = "detailsUrl";
-  const char kVersionKey[] = "version";
-  const char kPackagedAppKey[] = "packagedApp";
-
-}  // namespace extension_filenames
-
 namespace extension_misc {
 
 const char kBookmarkManagerId[] = "eemcgdkfndhakfknompkggombfjjjeno";