Allow showing pending URL for new tab navigations, but only if safe.

chrome/browser/managed_mode/managed_mode_browsertest.cc

Index: chrome/browser/managed_mode/managed_mode_browsertest.cc
diff --git a/chrome/browser/managed_mode/managed_mode_browsertest.cc b/chrome/browser/managed_mode/managed_mode_browsertest.cc
index d2a97a1883c57e753c000baf06454d6e8b0f9156..13f625381de7c4d21d7949bba62fd26527c5713f 100644
--- a/chrome/browser/managed_mode/managed_mode_browsertest.cc
+++ b/chrome/browser/managed_mode/managed_mode_browsertest.cc
@@ -173,6 +173,9 @@ class ManagedModeBlockModeTest : public InProcessBrowserTest {
           content::NotificationService::AllSources());
       InfoBarService* infobar_service =
           InfoBarService::FromWebContents(tab);
+      content::WindowedNotificationObserver back_observer(
+          content::NOTIFICATION_LOAD_STOP,
+          content::Source<NavigationController>(&tab->GetController()));
 
       switch (infobar_action) {
         case INFOBAR_ACCEPT:
@@ -183,6 +186,7 @@ class ManagedModeBlockModeTest : public InProcessBrowserTest {
         case INFOBAR_CANCEL:
           confirm_info_bar_delegate->InfoBarDismissed();
           ASSERT_FALSE(confirm_info_bar_delegate->Cancel());
+          back_observer.Wait();
           infobar_service->RemoveInfoBar(confirm_info_bar_delegate);
           break;
         case INFOBAR_ALREADY_ADDED: