Remove the ConnCountImpact FieldTrial code.

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"
 
 class ChromeBrowserFieldTrials {
  public:
   explicit ChromeBrowserFieldTrials(const CommandLine& command_line);
   ~ChromeBrowserFieldTrials();
 
   // Add an invocation of your field trial init function to this method.
   void SetupFieldTrials(bool proxy_policy_is_set);
 
  private:
   FRIEND_TEST_ALL_PREFIXES(BrowserMainTest,
                            WarmConnectionFieldTrial_WarmestSocket);
   FRIEND_TEST_ALL_PREFIXES(BrowserMainTest, WarmConnectionFieldTrial_Random);
   FRIEND_TEST_ALL_PREFIXES(BrowserMainTest, WarmConnectionFieldTrial_Invalid);
 
-  // A/B test for the maximum number of persistent connections per host.
-  void ConnectionFieldTrial();
-
   // A/B test for determining a value for unused socket timeout.
   void SocketTimeoutFieldTrial();
 
   // 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 warmest socket vs. most recently used socket.
@@ skipping 31 matching lines @@
 
   // Sets up field trials for doing Cache Sensitivity Analysis.
   void SetUpCacheSensitivityAnalysisFieldTrial();
 
   const CommandLine& parsed_command_line_;
 
   DISALLOW_COPY_AND_ASSIGN(ChromeBrowserFieldTrials);
 };
 
 #endif  // CHROME_BROWSER_CHROME_BROWSER_FIELD_TRIALS_H_