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

chrome/browser/protector/protected_prefs_watcher_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 "base/message_loop.h"
 #include "base/values.h"
 #include "chrome/browser/extensions/extension_pref_value_map.h"
 #include "chrome/browser/extensions/extension_pref_value_map_factory.h"
 #include "chrome/browser/extensions/extension_prefs.h"
 #include "chrome/browser/extensions/extension_service.h"
@@ skipping 114 matching lines @@
   EXPECT_FALSE(IsSignatureValid());
 
   // Flip another pref value of that extension.
   extension_prefs->SetIsIncognitoEnabled(
       sample_id, !extension_prefs->IsIncognitoEnabled(sample_id));
 
   // No changes to the backup and signature.
   EXPECT_FALSE(IsSignatureValid());
 
   // Blacklisting the extension does update the backup and signature.
-  std::set<std::string> blacklist;
-  blacklist.insert(sample_id);
-  extension_prefs->UpdateBlacklist(blacklist);
+  extension_prefs->SetExtensionBlacklisted(sample_id, true);
 
   EXPECT_TRUE(IsSignatureValid());
 }
 
 // Verify that version bigger than 1 is included in the signature.
 TEST_F(ProtectedPrefsWatcherTest, VersionIsSigned) {
   // Reset version to 1.
   prefs_->ClearPref("backup._version");
   // This should make the backup invalid.
   EXPECT_FALSE(IsSignatureValid());
@@ skipping 136 matching lines @@
             std::string(prefs::kHomePageIsNewTabPage));
   EXPECT_EQ("browser.show_home_button", std::string(prefs::kShowHomeButton));
   EXPECT_EQ("session.restore_on_startup",
             std::string(prefs::kRestoreOnStartup));
   EXPECT_EQ("session.urls_to_restore_on_startup",
             std::string(prefs::kURLsToRestoreOnStartup));
   EXPECT_EQ("pinned_tabs", std::string(prefs::kPinnedTabs));
 }
 
 }  // namespace protector