chromeos: make mash session not launch chrome

mash/session/session.cc

Index: mash/session/session.cc
diff --git a/mash/session/session.cc b/mash/session/session.cc
index d02dabbb1e66a1ed13abcd98f8c4625c4d98c352..088cd5f94df212fe3adccce3b37929de0d0c41b5 100644
--- a/mash/session/session.cc
+++ b/mash/session/session.cc
@@ -7,7 +7,6 @@
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/message_loop/message_loop.h"
-#include "content/public/common/service_names.mojom.h"
 #include "mash/common/config.h"
 #include "mash/quick_launch/public/interfaces/constants.mojom.h"
 #include "services/service_manager/public/cpp/connector.h"
@@ -22,10 +21,6 @@ Session::~Session() {}
 void Session::OnStart() {
   StartWindowManager();
   StartQuickLaunch();
-
-  // Launch a chrome window for dev convience; don't do this in the long term.
-  context()->connector()->StartService(
-      content::mojom::kPackagedServicesServiceName);
 }
 
 void Session::StartWindowManager() {