Move small c/b/extensions classes into extensions namespace no.2

chrome/browser/extensions/settings/settings_frontend_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 "testing/gtest/include/gtest/gtest.h"
 
 #include "base/bind.h"
 #include "base/file_util.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/message_loop.h"
@@ skipping 132 matching lines @@
       id, Extension::TYPE_PACKAGED_APP);
 
   ValueStore* storage = util::GetStorage(id, frontend_.get());
 
   {
     StringValue bar("bar");
     ValueStore::WriteResult result = storage->Set(DEFAULTS, "foo", bar);
     ASSERT_FALSE(result->HasError());
   }
 
-  // This would be triggered by extension uninstall via an ExtensionDataDeleter.
+  // This would be triggered by extension uninstall via a DataDeleter.
   frontend_->DeleteStorageSoon(id);
   MessageLoop::current()->RunAllPending();
 
   // The storage area may no longer be valid post-uninstall, so re-request.
   storage = util::GetStorage(id, frontend_.get());
   {
     ValueStore::ReadResult result = storage->Get();
     ASSERT_FALSE(result->HasError());
     EXPECT_TRUE(result->settings()->empty());
   }
@@ skipping 149 matching lines @@
 
   frontend_->RunWithStorage(
       id, settings::SYNC, base::Bind(&UnlimitedSyncStorageTestCallback));
   frontend_->RunWithStorage(
       id, settings::LOCAL, base::Bind(&UnlimitedLocalStorageTestCallback));
 
   MessageLoop::current()->RunAllPending();
 }
 
 }  // namespace extensions