[net] Change factory methods for HostResolver and HostCache to return a scoped_ptr

chrome/browser/chrome_browser_field_trials.h

 // 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.
 
 #ifndef CHROME_BROWSER_CHROME_BROWSER_FIELD_TRIALS_H_
 #define CHROME_BROWSER_CHROME_BROWSER_FIELD_TRIALS_H_
 
 #include "base/basictypes.h"
 #include "base/command_line.h"
 #include "base/gtest_prod_util.h"
@@ skipping 44 matching lines @@
   void AutoLaunchChromeFieldTrial();
 
   // A collection of one-time-randomized and session-randomized field trials
   // intended to test the uniformity and correctness of the field trial control,
   // bucketing and reporting systems.
   void SetupUniformityFieldTrials();
 
   // Disables the new tab field trial if not running in desktop mode.
   void DisableNewTabFieldTrialIfNecesssary();
 
+  // A/B test for determining correctness of the asynchronous DNS client.
+  void AsyncDnsFieldTrial();
+
   const CommandLine& parsed_command_line_;
 
   DISALLOW_COPY_AND_ASSIGN(ChromeBrowserFieldTrials);
 };
 
 #endif  // CHROME_BROWSER_CHROME_BROWSER_FIELD_TRIALS_H_