Properly decode IDN in interstitials

chrome/browser/interstitials/security_interstitial_page_test_utils.cc

+// Copyright 2015 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 "chrome/browser/interstitials/security_interstitial_page_test_utils.h"
+
+#include <string>
+
+#include "base/strings/stringprintf.h"
+#include "content/public/browser/interstitial_page.h"
+#include "content/public/test/browser_test_utils.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace chrome_browser_interstitials {
+
+bool IsInterstitialDisplayingText(content::InterstitialPage* interstitial,
+                                  const std::string& text) {
+  // It's valid for |text| to contain "\'", but simply look for "'" instead
+  // since this function is used for searching host names and a predefined
+  // string.
+  DCHECK(text.find("\'") == std::string::npos);
+  std::string command = base::StringPrintf(
+      "var hasText = document.body.textContent.indexOf('%s') >= 0;"
+      "window.domAutomationController.send(hasText ? 1 : 0);",
+      text.c_str());
+  int result = 0;
+  EXPECT_TRUE(content::ExecuteScriptAndExtractInt(interstitial->GetMainFrame(),
+                                                  command, &result));
+  return result == 1;
+}
+
+}  // namespace chrome_browser_interstitials