Additional fixes for prerender/instant + browsing history.

chrome/browser/tab_contents/web_contents_unittest.cc

 // Copyright (c) 2011 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/logging.h"
 #include "base/utf_string_conversions.h"
 #include "chrome/browser/dom_operation_notification_details.h"
 #include "chrome/browser/prefs/pref_service.h"
 #include "chrome/browser/tab_contents/chrome_interstitial_page.h"
 #include "chrome/common/chrome_notification_types.h"
@@ skipping 1693 matching lines @@
   interstitial->Show();
   interstitial->TestDidNavigate(1, url2);
   EXPECT_TRUE(interstitial->is_showing());
   EXPECT_EQ(2, controller().entry_count());
 
   // Create another NavigationController.
   GURL url3("http://foo2");
   scoped_ptr<TestTabContents> other_contents(CreateTestTabContents());
   NavigationController& other_controller = other_contents->controller();
   other_contents->NavigateAndCommit(url3);
+  other_contents->ExpectSetHistoryLengthAndPrune(
+      other_controller.GetEntryAtIndex(0)->site_instance(), 1,
+      other_controller.GetEntryAtIndex(0)->page_id());
   other_controller.CopyStateFromAndPrune(&controller(), false);
 
   // The merged controller should only have two entries: url1 and url2.
   ASSERT_EQ(2, other_controller.entry_count());
   EXPECT_EQ(1, other_controller.GetCurrentEntryIndex());
   EXPECT_EQ(url1, other_controller.GetEntryAtIndex(0)->url());
   EXPECT_EQ(url3, other_controller.GetEntryAtIndex(1)->url());
 
   // And the merged controller shouldn't be showing an interstitial.
   EXPECT_FALSE(other_contents->showing_interstitial_page());
@@ skipping 20 matching lines @@
   bool deleted = false;
   GURL url3("http://interstitial");
   TestInterstitialPage* interstitial =
       new TestInterstitialPage(other_contents.get(), true, url3, &state,
                                &deleted);
   TestInterstitialPageStateGuard state_guard(interstitial);
   interstitial->Show();
   interstitial->TestDidNavigate(1, url3);
   EXPECT_TRUE(interstitial->is_showing());
   EXPECT_EQ(2, other_controller.entry_count());
-
+  other_contents->ExpectSetHistoryLengthAndPrune(
+      other_controller.GetEntryAtIndex(0)->site_instance(), 1,
+      other_controller.GetEntryAtIndex(0)->page_id());
   other_controller.CopyStateFromAndPrune(&controller(), false);
 
   // The merged controller should only have two entries: url1 and url2.
   ASSERT_EQ(2, other_controller.entry_count());
   EXPECT_EQ(1, other_controller.GetCurrentEntryIndex());
   EXPECT_EQ(url1, other_controller.GetEntryAtIndex(0)->url());
   EXPECT_EQ(url3, other_controller.GetEntryAtIndex(1)->url());
 
   // It should have a transient entry.
   EXPECT_TRUE(other_controller.GetTransientEntry());
@@ skipping 30 matching lines @@
   window.close_count = 0;
 
   const int kWindowCount = 4;
   for (int i = 0; i < kWindowCount; i++) {
     tab_contents->AddConstrainedDialog(&window);
   }
   EXPECT_EQ(window.close_count, 0);
   delete tab_contents;
   EXPECT_EQ(window.close_count, kWindowCount);
 }