[content shell] don't open new windows after printing the test results

content/shell/webkit_test_controller.cc

Index: content/shell/webkit_test_controller.cc
diff --git a/content/shell/webkit_test_controller.cc b/content/shell/webkit_test_controller.cc
index a07c83e62260edb7cab5d181a57b0fb8c00cbd72..cdc341265afe481ffe73b0db2003233661a92f84 100644
--- a/content/shell/webkit_test_controller.cc
+++ b/content/shell/webkit_test_controller.cc
@@ -264,6 +264,7 @@ bool WebKitTestController::ResetAfterLayoutTest() {
   printer_->PrintImageFooter();
   send_configuration_to_next_host_ = false;
   is_running_test_ = false;
+  is_cleaning_up_ = false;
   is_compositing_test_ = false;
   enable_pixel_dumping_ = false;
   expected_pixel_hash_.clear();
@@ -299,6 +300,9 @@ void WebKitTestController::OverrideWebkitPrefs(WebPreferences* prefs) {
 }
 
 void WebKitTestController::OpenURL(const GURL& url) {
+  if (is_cleaning_up_)
+    return;
+
   Shell::CreateNewWindow(main_window_->web_contents()->GetBrowserContext(),
                          url,
                          main_window_->web_contents()->GetSiteInstance(),
@@ -457,6 +461,7 @@ void WebKitTestController::SendTestConfiguration() {
 
 void WebKitTestController::OnTestFinished(bool did_timeout) {
   watchdog_.Cancel();
+  is_cleaning_up_ = true;
   if (did_timeout) {
     printer_->AddErrorMessage(
         "FAIL: Timed out waiting for notifyDone to be called");