Show interstitial from ManagedModeNavigationObserver instead of ManagedModeResourceThrottle.

chrome/browser/managed_mode/managed_mode_resource_throttle_browsertest.cc

 // Copyright (c) 2013 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 "chrome/browser/managed_mode/managed_mode_resource_throttle.h"
 
 #include "base/prefs/pref_service.h"
 #include "chrome/browser/managed_mode/managed_user_service.h"
 #include "chrome/browser/managed_mode/managed_user_service_factory.h"
 #include "chrome/browser/profiles/profile.h"
@@ skipping 23 matching lines @@
   ManagedUserService* managed_user_service_;
 };
 
 void ManagedModeResourceThrottleTest::SetUpOnMainThread() {
   Profile* profile = browser()->profile();
   managed_user_service_ = ManagedUserServiceFactory::GetForProfile(profile);
   profile->GetPrefs()->SetBoolean(prefs::kProfileIsManaged, true);
   managed_user_service_->Init();
 }
 
-// Tests that showing the blocking interstitial for a WebContents without a
+// Tests that blocking a request for a WebContents without a
 // ManagedModeNavigationObserver doesn't crash.
 IN_PROC_BROWSER_TEST_F(ManagedModeResourceThrottleTest, NoNavigationObserver) {
   scoped_ptr<WebContents> web_contents(
       WebContents::Create(WebContents::CreateParams(browser()->profile())));
   NavigationController& controller = web_contents->GetController();
   content::TestNavigationObserver observer(
       content::Source<NavigationController>(&controller), 1);
   controller.LoadURL(GURL("http://www.example.com"), content::Referrer(),
                      content::PAGE_TRANSITION_TYPED, std::string());
   observer.Wait();
-  content::NavigationEntry* entry = controller.GetActiveEntry();
-  ASSERT_TRUE(entry);
-  EXPECT_EQ(content::PAGE_TYPE_INTERSTITIAL, entry->GetPageType());
 }