ErrorPage: use case-insensitive check for text

chrome/browser/net/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 <memory>
 #include <utility>
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/compiler_specific.h"
@@ skipping 77 matching lines @@
 using net::URLRequestTestJob;
 
 namespace {
 
 // Returns true if |text| is displayed on the page |browser| is currently
 // displaying.  Uses "innerText", so will miss hidden text, and whitespace
 // space handling may be weird.
 bool WARN_UNUSED_RESULT IsDisplayingText(Browser* browser,
                                          const std::string& text) {
   std::string command = base::StringPrintf(
-      "var textContent = document.body.innerText;"
-      "var hasText = textContent.indexOf('%s') >= 0;"
+      "var textContent = document.body.innerText.toLowerCase();"
+      "var hasText = textContent.indexOf('%s'.toLowerCase()) >= 0;"
       "domAutomationController.send(hasText);",
       text.c_str());
   bool result = false;
   EXPECT_TRUE(content::ExecuteScriptAndExtractBool(
       browser->tab_strip_model()->GetActiveWebContents(), command, &result));
   return result;
 }
 
 // Expands the more box on the currently displayed error page.
 void ToggleHelpBox(Browser* browser) {
@@ skipping 1423 matching lines @@
                        Http09WeirdPortEnabled) {
   const char kHttp09Response[] = "JumboShrimp";
   ASSERT_TRUE(embedded_test_server()->Start());
   ui_test_utils::NavigateToURL(
       browser(), embedded_test_server()->GetURL(std::string("/echo-raw?") +
                                                 kHttp09Response));
   EXPECT_TRUE(IsDisplayingText(browser(), kHttp09Response));
 }
 
 }  // namespace