Add custom interstitial for captive portals.

chrome/browser/ssl/captive_portal_blocking_page.h

+// Copyright 2014 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.
+
+#ifndef CHROME_BROWSER_SSL_CAPTIVE_PORTAL_BLOCKING_PAGE_H_
+#define CHROME_BROWSER_SSL_CAPTIVE_PORTAL_BLOCKING_PAGE_H_
+
+#include <string>
+
+#include "base/macros.h"
+#include "chrome/browser/interstitials/security_interstitial_page.h"
+
+class GURL;
+
+// This class is responsible for showing/hiding the interstitial page that is
+// shown when a captive portal and an SSL error is detected.
+// It deletes itself when the interstitial page is closed.
+//
+// This class should only be used on the UI thread because its implementation
+// uses captive_portal::CaptivePortalService, which can only be accessed on the
+// UI thread.
+class CaptivePortalBlockingPage : public SecurityInterstitialPage {
+ public:
+  CaptivePortalBlockingPage(content::WebContents* web_contents,
+                            const GURL& request_url);
+  ~CaptivePortalBlockingPage() override;
+
+  // SecurityInterstitialPage method:
+  SecurityInterstitialPage::Type GetTypeForTesting() const override;
+
+ protected:
+  // SecurityInterstitialPage implementation:
+  void PopulateLoadTimeData(
+      base::DictionaryValue* load_time_data) override;
+  bool ShouldCreateNewNavigation() const override;
+
+  // InterstitialPageDelegate implementation.
+  void CommandReceived(const std::string& command) override;
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(CaptivePortalBlockingPage);
+};
+
+#endif  // CHROME_BROWSER_SSL_CAPTIVE_PORTAL_BLOCKING_PAGE_H_