Refactored SettingsFrontend and forwarding of calls to the backends.

chrome/browser/extensions/extension_service_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 "chrome/browser/extensions/extension_service_unittest.h"
 
 #include <algorithm>
 #include <set>
 #include <vector>
 
@@ skipping 4120 matching lines @@
           install_dir,
           false);
   EXPECT_FALSE(service->extensions_enabled());
   service->Init();
   loop.RunAllPending();
   EXPECT_TRUE(recorder.ready());
 
   // Explicitly delete all the resources used in this test.
   profile.reset();
   service = NULL;
+  // Execute any pending deletion tasks.
+  loop.RunAllPending();
 }
 
 // Test loading extensions that require limited and unlimited storage quotas.
 TEST_F(ExtensionServiceTest, StorageQuota) {
   InitializeEmptyExtensionService();
 
   FilePath extensions_path = data_dir_
       .AppendASCII("storage_quota");
 
   FilePath limited_quota_ext =
@@ skipping 1084 matching lines @@
   // This should NOT trigger an alert.
   provider->UpdateOrAddExtension(hosted_app, "1.0.0.0",
                                  data_dir_.AppendASCII("hosted_app.crx"));
 
   service_->CheckForExternalUpdates();
   loop_.RunAllPending();
 
   ASSERT_TRUE(service_->PopulateExtensionErrorUI(extension_error_ui.get()));
   ASSERT_EQ(1u, extension_error_ui->get_external_extension_ids()->size());
 }