Prerendered pages are swapped in at browser::Navigate time.

chrome/browser/prerender/prerender_manager_unittest.cc

 // Copyright (c) 2012 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/command_line.h"
 #include "base/memory/scoped_vector.h"
 #include "base/message_loop.h"
 #include "base/time.h"
 #include "chrome/browser/prerender/prerender_contents.h"
 #include "chrome/browser/prerender/prerender_manager.h"
@@ skipping 218 matching lines @@
 
   // Needed to pass PrerenderManager's DCHECKs.
   MessageLoop message_loop_;
   content::TestBrowserThread ui_thread_;
   scoped_ptr<TestPrerenderManager> prerender_manager_;
 };
 
 TEST_F(PrerenderManagerTest, EmptyTest) {
   EXPECT_FALSE(prerender_manager()->MaybeUsePrerenderedPage(
       NULL,
-      GURL("http://www.google.com/"),
-      GURL()));
-
-  EXPECT_FALSE(prerender_manager()->MaybeUsePrerenderedPage(
-      NULL,
-      GURL("http://www.google.com/search"),
-      GURL("http://www.google.com")));
+      GURL("http://www.google.com/")));
 }
 
 TEST_F(PrerenderManagerTest, FoundTest) {
   GURL url("http://www.google.com/");
   DummyPrerenderContents* prerender_contents =
       prerender_manager()->CreateNextPrerenderContents(
           url,
           FINAL_STATUS_USED);
   EXPECT_TRUE(prerender_manager()->AddSimplePrerender(url));
   EXPECT_TRUE(prerender_contents->has_started());
@@ skipping 330 matching lines @@
       prerender_manager()->CreateNextPrerenderContents(
           url, ORIGIN_LINK_REL_PRERENDER, FINAL_STATUS_MANAGER_SHUTDOWN);
   EXPECT_TRUE(prerender_manager()->AddSimplePrerender(url));
   EXPECT_TRUE(prerender_contents->has_started());
   prerender_manager()->CancelOmniboxPrerenders();
   const DummyPrerenderContents* null = NULL;
   EXPECT_NE(null, prerender_manager()->FindEntry(url));
 }
 
 }  // namespace prerender