content: Move all listeners of NOTIFICATION_RENDER_VIEW_HOST_CREATED out of content.

chrome/browser/errorpage_browsertest.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/bind.h"
 #include "base/utf_string_conversions.h"
 #include "chrome/browser/net/url_request_mock_util.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/browser_commands.h"
 #include "chrome/browser/ui/tabs/tab_strip_model.h"
@@ skipping 76 matching lines @@
                                       int num_navigations,
                                       HistoryNavigationDirection direction) {
     content::TitleWatcher title_watcher(
         browser()->tab_strip_model()->GetActiveWebContents(),
         ASCIIToUTF16(expected_title));
 
     content::TestNavigationObserver test_navigation_observer(
         content::Source<NavigationController>(
               &browser()->tab_strip_model()->GetActiveWebContents()->
                   GetController()),
-        NULL,
         num_navigations);
     if (direction == HISTORY_NAVIGATE_BACK) {
       chrome::GoBack(browser(), CURRENT_TAB);
     } else if (direction == HISTORY_NAVIGATE_FORWARD) {
       chrome::GoForward(browser(), CURRENT_TAB);
     } else {
       FAIL();
     }
     test_navigation_observer.WaitForObservation(
         base::Bind(&content::RunMessageLoop),
@@ skipping 130 matching lines @@
 }
 
 // Checks that the Link Doctor is not loaded when we receive an actual 404 page.
 IN_PROC_BROWSER_TEST_F(ErrorPageTest, Page404) {
   NavigateToURLAndWaitForTitle(
       content::URLRequestMockHTTPJob::GetMockUrl(
           base::FilePath(FILE_PATH_LITERAL("page404.html"))),
       "SUCCESS",
       1);
 }