Add SocketWatcherFactory as a helper class to NQE

chrome/browser/profiles/profile_io_data.cc

Index: chrome/browser/profiles/profile_io_data.cc
diff --git a/chrome/browser/profiles/profile_io_data.cc b/chrome/browser/profiles/profile_io_data.cc
index c4e0cd99ea99340dd0a1c09db223a65b0e501053..becead43acae8308e4d32674f48dae40e7a53db1 100644
--- a/chrome/browser/profiles/profile_io_data.cc
+++ b/chrome/browser/profiles/profile_io_data.cc
@@ -1292,9 +1292,10 @@ scoped_ptr<net::HttpNetworkSession> ProfileIOData::CreateHttpNetworkSession(
   io_thread->InitializeNetworkSessionParams(&params);
   net::URLRequestContextBuilder::SetHttpNetworkSessionComponents(context,
                                                                  &params);
-  if (!IsOffTheRecord()) {
+  if (!IsOffTheRecord() && io_thread->globals()->network_quality_estimator) {
     params.socket_performance_watcher_factory =
-        io_thread->globals()->network_quality_estimator.get();
+        io_thread->globals()
+            ->network_quality_estimator->GetSocketPerformanceWatcherFactory();

[mmenke, 2016/04/05 15:45:38]

If this is a global, should it be hooked up to the IOThread's
URLRequestContexts?  Both the system one and the proxy one.

[tbansal1, 2016/04/05 17:30:38]

That makes sense. I should move this to URLRequestContext instead of Params (CL
coming soon).

   }
   if (data_reduction_proxy_io_data_.get())
     params.proxy_delegate = data_reduction_proxy_io_data_->proxy_delegate();