Deciding best connection to schedule requests on based on cwnd and idle time (Reopened after revert)

chrome/browser/browser_main.h

 // Copyright (c) 2011 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_BROWSER_MAIN_H_
 #define CHROME_BROWSER_BROWSER_MAIN_H_
 #pragma once
 
 #include "base/basictypes.h"
+#include "base/gtest_prod_util.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/metrics/field_trial.h"
 #include "base/tracked_objects.h"
 
 class BrowserThread;
 class CommandLine;
 class FieldTrialSynchronizer;
 class HighResolutionTimerManager;
 struct MainFunctionParams;
 class MessageLoop;
@@ skipping 102 matching lines @@
   // A/B test for the maximum number of connections per proxy server.
   void ProxyConnectionsFieldTrial();
 
   // A/B test for spdy when --use-spdy not set.
   void SpdyFieldTrial();
 
   // A/B test for automatically establishing a backup TCP connection when a
   // specified timeout value is reached.
   void ConnectBackupJobsFieldTrial();
 
+  // A/B test for warmest socket vs. most recently used socket.
+  void WarmConnectionFieldTrial();
+
   // Used to initialize NSPR where appropriate.
   virtual void InitializeSSL() = 0;
 
   // Methods for |MainMessageLoopStart()| --------------------------------------
 
   void InitializeMainThread();
 
   // Methods for |SetupMetricsAndFieldTrials()| --------------------------------
 
   static MetricsService* InitializeMetrics(
@@ skipping 22 matching lines @@
   // Members initialized in |MainMessageLoopStart()| ---------------------------
   scoped_ptr<MessageLoop> main_message_loop_;
   scoped_ptr<base::SystemMonitor> system_monitor_;
   scoped_ptr<HighResolutionTimerManager> hi_res_timer_manager_;
   scoped_ptr<net::NetworkChangeNotifier> network_change_notifier_;
   scoped_ptr<BrowserThread> main_thread_;
 
   // Initialized in SetupMetricsAndFieldTrials.
   scoped_refptr<FieldTrialSynchronizer> field_trial_synchronizer_;
 
+  FRIEND_TEST(BrowserMainTest, WarmConnectionFieldTrial_WarmestSocket);
+  FRIEND_TEST(BrowserMainTest, WarmConnectionFieldTrial_Random);
+  FRIEND_TEST(BrowserMainTest, WarmConnectionFieldTrial_Invalid);
   DISALLOW_COPY_AND_ASSIGN(BrowserMainParts);
 };
 
 
 // Perform platform-specific work that needs to be done after the main event
 // loop has ended.
 void DidEndMainMessageLoop();
 
 // Records the conditions that can prevent Breakpad from generating and
 // sending crash reports.  The presence of a Breakpad handler (after
 // attempting to initialize crash reporting) and the presence of a debugger
 // are registered with the UMA metrics service.
 void RecordBreakpadStatusUMA(MetricsService* metrics);
 
 // Displays a warning message if some minimum level of OS support is not
 // present on the current platform.
 void WarnAboutMinimumSystemRequirements();
 
 // Records the time from our process' startup to the present time in
 // the UMA histogram |metric_name|.
 void RecordBrowserStartupTime();
 
 #endif  // CHROME_BROWSER_BROWSER_MAIN_H_