Add RetainedRef uses where needed.

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 <utility>
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/compiler_specific.h"
 #include "base/files/scoped_temp_dir.h"
@@ skipping 929 matching lines @@
   // cache.
   GURL test_url(embedded_test_server()->GetURL("/nocache.html"));
   NavigateToURLAndWaitForTitle(test_url, "Nocache Test Page", 1);
 
   // Reload same URL after forcing an error from the the network layer;
   // confirm that the error page is told the cached copy exists.
   scoped_refptr<net::URLRequestContextGetter> url_request_context_getter =
       browser()->profile()->GetRequestContext();
   BrowserThread::PostTask(
       BrowserThread::IO, FROM_HERE,
-      base::Bind(&InterceptNetworkTransactions, url_request_context_getter,
+      base::Bind(&InterceptNetworkTransactions,
+                 base::RetainedRef(url_request_context_getter),
                  net::ERR_FAILED));
 
   // With no navigation corrections to load, there's only one navigation.
   ui_test_utils::NavigateToURL(browser(), test_url);
   EXPECT_TRUE(ProbeStaleCopyValue(true));
   EXPECT_TRUE(IsDisplayingText(browser(), GetShowSavedButtonLabel()));
   EXPECT_NE(base::ASCIIToUTF16("Nocache Test Page"),
             browser()->tab_strip_model()->GetActiveWebContents()->GetTitle());
 
   // Confirm that loading the stale copy from the cache works.
@@ skipping 260 matching lines @@
   // cache.
   GURL test_url(embedded_test_server()->GetURL("/nocache.html"));
   NavigateToURLAndWaitForTitle(test_url, "Nocache Test Page", 1);
 
   // Reload same URL after forcing an error from the the network layer;
   // confirm that the error page is told the cached copy exists.
   scoped_refptr<net::URLRequestContextGetter> url_request_context_getter =
       browser()->profile()->GetRequestContext();
   BrowserThread::PostTask(
       BrowserThread::IO, FROM_HERE,
-      base::Bind(&InterceptNetworkTransactions, url_request_context_getter,
+      base::Bind(&InterceptNetworkTransactions,
+                 base::RetainedRef(url_request_context_getter),
                  net::ERR_CONNECTION_FAILED));
 
   ui_test_utils::NavigateToURLBlockUntilNavigationsComplete(
       browser(), test_url, 2);
   EXPECT_TRUE(IsDisplayingText(browser(), GetShowSavedButtonLabel()));
   EXPECT_TRUE(ProbeStaleCopyValue(true));
 
   // Confirm that loading the stale copy from the cache works.
   content::TestNavigationObserver same_tab_observer(
       browser()->tab_strip_model()->GetActiveWebContents(), 1);
@@ skipping 214 matching lines @@
 IN_PROC_BROWSER_TEST_F(ErrorPageForIDNTest, IDN) {
   // ERR_UNSAFE_PORT will not trigger navigation corrections.
   ui_test_utils::NavigateToURL(
       browser(),
       URLRequestFailedJob::GetMockHttpUrlForHostname(net::ERR_UNSAFE_PORT,
                                                      kHostname));
   EXPECT_TRUE(IsDisplayingText(browser(), kHostnameJSUnicode));
 }
 
 }  // namespace