Make Blacklist::IsBlacklist asynchronous (it will need to be for safe

chrome/browser/extensions/admin_policy.h

Index: chrome/browser/extensions/admin_policy.h
diff --git a/chrome/browser/extensions/admin_policy.h b/chrome/browser/extensions/admin_policy.h
index 5d69d07d2b0424cbab0790bce839e0aa6aa4e52c..61cd9873ac6e6f0f091bc02a9905a67e0168f387 100644
--- a/chrome/browser/extensions/admin_policy.h
+++ b/chrome/browser/extensions/admin_policy.h
@@ -22,10 +22,8 @@ namespace admin_policy {
 // from the command line, or when loaded as an unpacked extension).
 bool BlacklistedByDefault(const base::ListValue* blacklist);
 
-// Returns true if the extension is allowed by Google blacklist and admin policy
-// white-, black- and forcelists.
-bool UserMayLoad(bool is_google_blacklisted,
-                 const base::ListValue* blacklist,
+// Returns true if the extension is allowed by the admin policy.
+bool UserMayLoad(const base::ListValue* blacklist,
                  const base::ListValue* whitelist,
                  const base::ListValue* forcelist,
                  const Extension* extension,