Don't report blocked web contents from already navigated render views.

chrome/browser/ui/blocked_content/popup_blocker_browsertest.cc

 // Copyright 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 "base/command_line.h"
 #include "base/files/file_path.h"
 #include "base/message_loop/message_loop.h"
 #include "base/run_loop.h"
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/browser/chrome_notification_types.h"
@@ skipping 10 matching lines @@
 #include "chrome/browser/ui/omnibox/omnibox_view.h"
 #include "chrome/browser/ui/tabs/tab_strip_model.h"
 #include "chrome/common/chrome_paths.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/test/base/in_process_browser_test.h"
 #include "chrome/test/base/test_switches.h"
 #include "chrome/test/base/ui_test_utils.h"
 #include "components/content_settings/core/browser/host_content_settings_map.h"
 #include "components/omnibox/autocomplete_match.h"
 #include "components/omnibox/autocomplete_result.h"
+#include "content/public/browser/navigation_controller.h"
 #include "content/public/browser/notification_registrar.h"
 #include "content/public/browser/notification_service.h"
 #include "content/public/browser/render_frame_host.h"
 #include "content/public/browser/web_contents.h"
 #include "content/public/browser/web_contents_observer.h"
 #include "content/public/common/url_constants.h"
 #include "content/public/test/browser_test_utils.h"
 #include "content/public/test/test_navigation_observer.h"
 #include "net/dns/mock_host_resolver.h"
 #include "net/test/embedded_test_server/embedded_test_server.h"
@@ skipping 436 matching lines @@
 }
 
 // Verify that the renderer can't DOS the browser by creating arbitrarily many
 // popups.
 IN_PROC_BROWSER_TEST_F(PopupBlockerBrowserTest, DenialOfService) {
   GURL url(embedded_test_server()->GetURL("/popup_blocker/popup-dos.html"));
   ui_test_utils::NavigateToURL(browser(), url);
   ASSERT_EQ(25, GetBlockedContentsCount());
 }
 
+// Verify that an onunload popup does not show up for about:blank.
+IN_PROC_BROWSER_TEST_F(PopupBlockerBrowserTest, Regress427477) {
+  ui_test_utils::NavigateToURL(browser(), GURL(chrome::kChromeUINewTabURL));
+  ui_test_utils::NavigateToURL(browser(), GURL(url::kAboutBlankURL));
+
+  GURL url(
+      embedded_test_server()->GetURL("/popup_blocker/popup-on-unload.html"));
+  ui_test_utils::NavigateToURL(browser(), url);
+
+  WebContents* tab = browser()->tab_strip_model()->GetActiveWebContents();
+
+  tab->GetController().GoBack();
+  content::WaitForLoadStop(tab);
+
+  ASSERT_EQ(1u, chrome::GetBrowserCount(browser()->profile(),
+                                        browser()->host_desktop_type()));
+  ASSERT_EQ(1, browser()->tab_strip_model()->count());
+
+  // The popup from the unload event handler should not show up for about:blank.
+  ASSERT_EQ(0, GetBlockedContentsCount());
+}
+
 }  // namespace