Add a chrome://interstitials page.

chrome/browser/safe_browsing/safe_browsing_blocking_page.h

Index: chrome/browser/safe_browsing/safe_browsing_blocking_page.h
diff --git a/chrome/browser/safe_browsing/safe_browsing_blocking_page.h b/chrome/browser/safe_browsing/safe_browsing_blocking_page.h
index 6b9f232eca39b6ba8b44458df9026b42f04e03cf..31ebfdd0baa6de3465a550b633d1dfcdea07ddab 100644
--- a/chrome/browser/safe_browsing/safe_browsing_blocking_page.h
+++ b/chrome/browser/safe_browsing/safe_browsing_blocking_page.h
@@ -60,6 +60,13 @@ class SafeBrowsingBlockingPage : public content::InterstitialPageDelegate {
 
   virtual ~SafeBrowsingBlockingPage();
 
+  // Creates a blocking page. Use ShowBlockingPage if you don't need to access
+  // the blocking page directly.
+  static SafeBrowsingBlockingPage* CreateBlockingPage(
+      SafeBrowsingUIManager* ui_manager,
+      content::WebContents* web_contents,
+      const UnsafeResource& unsafe_resource);
+
   // Shows a blocking page warning the user about phishing/malware for a
   // specific resource.
   // You can call this method several times, if an interstitial is already