Surface button for loading stale cache copy on net error page.

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/command_line.h"
 #include "base/compiler_specific.h"
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/path_service.h"
@@ skipping 236 matching lines @@
   void GoForwardAndWaitForNavigations(int num_navigations) {
     NavigateHistory(num_navigations, HISTORY_NAVIGATE_FORWARD);
   }
 
   // Confirms that the javascript variable indicating whether or not we have
   // a stale copy in the cache has been set to |expected|.
   bool ProbeStaleCopyValue(bool expected) {
     const char* js_cache_probe =
         "try {\n"
         "    domAutomationController.send(\n"
-        "        templateData.staleCopyInCache ? 'yes' : 'no');\n"
+        "        'staleCopyInCache' in templateData ? 'yes' : 'no');\n"
         "} catch (e) {\n"
         "    domAutomationController.send(e.message);\n"
         "}\n";
 
     std::string result;
     bool ret =
         content::ExecuteScriptAndExtractString(
             browser()->tab_strip_model()->GetActiveWebContents(),
             js_cache_probe,
             &result);
@@ skipping 663 matching lines @@
       browser(),
       URLRequestFailedJob::GetMockHttpUrlForHostname(net::ERR_UNSAFE_PORT,
                                                      kHostname),
       1);
 
   ToggleHelpBox(browser());
   EXPECT_TRUE(IsDisplayingText(browser(), kHostnameJSUnicode));
 }
 
 }  // namespace