Decouple DevTools from socket implementation.

content/shell/shell_devtools_delegate.cc

Index: content/shell/shell_devtools_delegate.cc
diff --git a/content/shell/shell_devtools_delegate.cc b/content/shell/shell_devtools_delegate.cc
index 15cdce8bb6fdea408b687fdadf04deb819b100bc..b0a6da6fe4c72dd1252657d30c085ac6cb25e5c7 100644
--- a/content/shell/shell_devtools_delegate.cc
+++ b/content/shell/shell_devtools_delegate.cc
@@ -8,6 +8,7 @@
 
 #include "content/public/browser/devtools_http_handler.h"
 #include "grit/shell_resources.h"
+#include "net/base/tcp_listen_socket.h"
 #include "net/url_request/url_request_context_getter.h"
 #include "ui/base/resource/resource_bundle.h"
 
@@ -18,8 +19,7 @@ ShellDevToolsDelegate::ShellDevToolsDelegate(
     net::URLRequestContextGetter* context_getter)
     : context_getter_(context_getter) {
   devtools_http_handler_ = DevToolsHttpHandler::Start(
-      "127.0.0.1",
-      port,
+      new net::TCPListenSocketFactory("127.0.0.1", port),
       "",
       context_getter_,
       this);