Add histograms to NetworkChangeNotifier to identify ways to improve interface

net/url_request/url_request.cc

Index: net/url_request/url_request.cc
diff --git a/net/url_request/url_request.cc b/net/url_request/url_request.cc
index 8ea6325d819e072b5ad455b4c68867c90b7fa131..713e153139bea71e20ef67aad429ac94fb381fe5 100644
--- a/net/url_request/url_request.cc
+++ b/net/url_request/url_request.cc
@@ -20,6 +20,7 @@
 #include "net/base/load_flags.h"
 #include "net/base/net_errors.h"
 #include "net/base/net_log.h"
+#include "net/base/network_change_notifier.h"
 #include "net/base/network_delegate.h"
 #include "net/base/ssl_cert_request_info.h"
 #include "net/base/upload_data.h"
@@ -879,6 +880,11 @@ void URLRequest::NotifyReadCompleted(int bytes_read) {
   if (bytes_read <= 0)
     NotifyRequestCompleted();
 
+  // Notify NetworkChangeNotifier that we just received network data.
+  // This is to identify cases where the NetworkChangeNotifier thinks we
+  // are off-line but we are still receiving network data (crbug.com/124069).
+  NetworkChangeNotifier::NotifyDataReceived(url());
+
   if (delegate_)
     delegate_->OnReadCompleted(this, bytes_read);