Remove http_throttling.may_experiment pref.

chrome/browser/ui/webui/net_internals/net_internals_ui.cc

Index: chrome/browser/ui/webui/net_internals/net_internals_ui.cc
diff --git a/chrome/browser/ui/webui/net_internals/net_internals_ui.cc b/chrome/browser/ui/webui/net_internals/net_internals_ui.cc
index 326d5df51b374ed799832ba60fa8d84b9adcf0c0..1787dd84a65e6a290341a01c150cb3747a59a023 100644
--- a/chrome/browser/ui/webui/net_internals/net_internals_ui.cc
+++ b/chrome/browser/ui/webui/net_internals/net_internals_ui.cc
@@ -251,11 +251,6 @@ class NetInternalsMessageHandler
   // be accessed on the UI thread.
   BooleanPrefMember http_throttling_enabled_;
 
-  // The pref member that determines whether experimentation on HTTP throttling
-  // is allowed (this becomes false once the user explicitly sets the
-  // feature to on or off).
-  BooleanPrefMember http_throttling_may_experiment_;
-
   // This is the "real" message handler, which lives on the IO thread.
   scoped_refptr<IOThreadImpl> proxy_;
 
@@ -429,8 +424,6 @@ void NetInternalsMessageHandler::RegisterMessages() {
   PrefService* pref_service = profile->GetPrefs();
   http_throttling_enabled_.Init(
       prefs::kHttpThrottlingEnabled, pref_service, this);
-  http_throttling_may_experiment_.Init(
-      prefs::kHttpThrottlingMayExperiment, pref_service, NULL);
 
   proxy_ = new IOThreadImpl(this->AsWeakPtr(), g_browser_process->io_thread(),
                             profile->GetRequestContext());
@@ -615,14 +608,6 @@ void NetInternalsMessageHandler::OnEnableHttpThrottling(const ListValue* list) {
   }
 
   http_throttling_enabled_.SetValue(enable);
-
-  // We never receive OnEnableHttpThrottling unless the user has modified
-  // the value of the checkbox on the about:net-internals page.  Once the
-  // user does that, we no longer change its value automatically (e.g.
-  // by changing the default or running an experiment).
-  if (http_throttling_may_experiment_.GetValue()) {
-    http_throttling_may_experiment_.SetValue(false);
-  }
 }
 
 void NetInternalsMessageHandler::OnClearBrowserCache(const ListValue* list) {