Add a chrome://interstitials page.

chrome/browser/ssl/ssl_blocking_page.h

 // 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.
 
 #ifndef CHROME_BROWSER_SSL_SSL_BLOCKING_PAGE_H_
 #define CHROME_BROWSER_SSL_SSL_BLOCKING_PAGE_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 30 matching lines @@
   // DO NOT reorder or change these without also changing the JavaScript!
   enum SSLBlockingPageCommands {
     CMD_DONT_PROCEED = 0,
     CMD_PROCEED = 1,
     CMD_MORE = 2,
     CMD_RELOAD = 3,
     CMD_HELP = 4,
     CMD_CLOCK = 5
   };
 
-  SSLBlockingPage(
-      content::WebContents* web_contents,
-      int cert_error,
-      const net::SSLInfo& ssl_info,
-      const GURL& request_url,
-      bool overridable,
-      bool strict_enforcement,
-      const base::Callback<void(bool)>& callback);
   virtual ~SSLBlockingPage();
 
+  // Creates an SSL blocking page and an interstitial for it, and shows the
+  // interstitial. The interstitial owns the blocking page and is owned by
+  // |web_contents|.
+  static void Show(content::WebContents* web_contents,
+                   int cert_error,
+                   const net::SSLInfo& ssl_info,
+                   const GURL& request_url,
+                   bool overridable,
+                   bool strict_enforcement,
+                   const base::Callback<void(bool)>& callback);
+
+  // Creates an SSL blocking page and an interstitial for it without
+  // showing the interstitial. Since the interstitial isn't shown, the caller is
+  // responsible for cleaning up the blocking page.
+  static SSLBlockingPage* CreateForWebUI(content::WebContents* web_contents,
+                                         int cert_error,
+                                         const net::SSLInfo& ssl_info,
+                                         const GURL& request_url,
+                                         bool overridable,
+                                         bool strict_enforcement);
+
   // A method that sets strings in the specified dictionary from the passed
   // vector so that they can be used to resource the ssl_roadblock.html/
   // ssl_error.html files.
   // Note: there can be up to 5 strings in |extra_info|.
   static void SetExtraInfo(base::DictionaryValue* strings,
                            const std::vector<base::string16>& extra_info);
 
  protected:
   // InterstitialPageDelegate implementation.
   virtual std::string GetHTMLContents() OVERRIDE;
   virtual void CommandReceived(const std::string& command) OVERRIDE;
   virtual void OverrideEntry(content::NavigationEntry* entry) OVERRIDE;
   virtual void OverrideRendererPrefs(
       content::RendererPreferences* prefs) OVERRIDE;
   virtual void OnProceed() OVERRIDE;
   virtual void OnDontProceed() OVERRIDE;
 
  private:
+  SSLBlockingPage(
+      content::WebContents* web_contents,
+      int cert_error,
+      const net::SSLInfo& ssl_info,
+      const GURL& request_url,
+      bool overridable,
+      bool strict_enforcement,
+      const base::Callback<void(bool)>& callback);
+
   void NotifyDenyCertificate();
   void NotifyAllowCertificate();
 
   // These fetch the appropriate HTML page, depending on the
   // SSLInterstitialVersion Finch trial.
   std::string GetHTMLContentsV1();
   std::string GetHTMLContentsV2();
 
   // Used to query the HistoryService to see if the URL is in history. For UMA.
   void OnGotHistoryCount(bool success, int num_visits, base::Time first_visit);
@@ skipping 32 matching lines @@
 
   // For the FieldTrial: this contains the name of the condition.
   std::string trial_condition_;
 
   content::NotificationRegistrar registrar_;
 
   DISALLOW_COPY_AND_ASSIGN(SSLBlockingPage);
 };
 
 #endif  // CHROME_BROWSER_SSL_SSL_BLOCKING_PAGE_H_