Add a chrome://interstitials page.

chrome/browser/ssl/ssl_blocking_page.h

Index: chrome/browser/ssl/ssl_blocking_page.h
diff --git a/chrome/browser/ssl/ssl_blocking_page.h b/chrome/browser/ssl/ssl_blocking_page.h
index f9782cd65c3433ab2474f7a11b8e0e15928666d7..51c2c13254223c04e6427c694f8d686486ec01ce 100644
--- a/chrome/browser/ssl/ssl_blocking_page.h
+++ b/chrome/browser/ssl/ssl_blocking_page.h
@@ -48,16 +48,29 @@ class SSLBlockingPage : public content::InterstitialPageDelegate,
     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.
@@ -76,6 +89,15 @@ class SSLBlockingPage : public content::InterstitialPageDelegate,
   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();