Add net log entries that summarize transmit and receive byte counts.

chrome/browser/dom_ui/net_internals_ui.cc

Index: chrome/browser/dom_ui/net_internals_ui.cc
diff --git a/chrome/browser/dom_ui/net_internals_ui.cc b/chrome/browser/dom_ui/net_internals_ui.cc
index 0567c8cd99ec525445515fb6f7132744973ef215..8a08cfbca2a253e6da47a74d697e01d6fd391107 100644
--- a/chrome/browser/dom_ui/net_internals_ui.cc
+++ b/chrome/browser/dom_ui/net_internals_ui.cc
@@ -441,6 +441,7 @@ void NetInternalsMessageHandler::IOThreadImpl::OnRendererReady(
     dict->SetInteger(L"INIT_PROXY_RESOLVER",
                      net::NetLog::SOURCE_INIT_PROXY_RESOLVER);
     dict->SetInteger(L"CONNECT_JOB", net::NetLog::SOURCE_CONNECT_JOB);
+    dict->SetInteger(L"SOCKET", net::NetLog::SOURCE_SOCKET);
 
     CallJavascriptFunction(L"g_browser.receivedLogSourceTypeConstants", dict);
   }