Quit immediately in TestNavigationObserver.

chrome/browser/safe_browsing/safe_browsing_navigation_observer_browsertest.cc

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "base/strings/stringprintf.h"
 #include "chrome/browser/chrome_notification_types.h"
 #include "chrome/browser/download/download_prefs.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/safe_browsing/download_protection_service.h"
 #include "chrome/browser/safe_browsing/safe_browsing_navigation_observer.h"
@@ skipping 166 matching lines @@
   // html element with ID specified by |element_id|, and waits for
   // |number_of_navigations| to complete.
   void ClickTestLink(const char* element_id,
                      int number_of_navigations,
                      const GURL& page_url) {
     TabStripModel* tab_strip = browser()->tab_strip_model();
     content::WebContents* current_web_contents =
         tab_strip->GetActiveWebContents();
     ASSERT_TRUE(content::WaitForLoadStop(current_web_contents));
     content::TestNavigationObserver navigation_observer(
-      current_web_contents,
-      number_of_navigations);
+        current_web_contents, number_of_navigations,
+        content::MessageLoopRunner::QuitMode::DEFERRED);
     navigation_observer.StartWatchingNewWebContents();
     // Execute test.
     std::string script = base::StringPrintf("clickLink('%s');", element_id);
     ASSERT_TRUE(content::ExecuteScript(current_web_contents, script));
     // Wait for navigations on current tab and new tab (if any) to finish.
     navigation_observer.Wait();
     navigation_observer.StopWatchingNewWebContents();
 
     // Since this test uses javascript to mimic clicking on a link (no actual
     // user gesture), and DidGetUserInteraction() does not respond to
@@ skipping 1562 matching lines @@
           yesterday, embedded_test_server()->host_port_pair().host()));
   ASSERT_EQ(1U, ip_map->at(test_server_host).size());
   ClickTestLink("direct_download", 1, initial_url);
   EXPECT_EQ(1U, ip_map->at(test_server_host).size());
   EXPECT_EQ(embedded_test_server()->host_port_pair().host(),
             ip_map->at(test_server_host).back().ip);
   EXPECT_NE(yesterday, ip_map->at(test_server_host).front().timestamp);
 }
 
 }  // namespace safe_browsing