Add custom interstitial for captive portals.

chrome/browser/captive_portal/captive_portal_tab_helper.h

Index: chrome/browser/captive_portal/captive_portal_tab_helper.h
diff --git a/chrome/browser/captive_portal/captive_portal_tab_helper.h b/chrome/browser/captive_portal/captive_portal_tab_helper.h
index 99508a6114bfd3aa72c8df95ab10ddc1a50ae068..182fc68816ec72c64ac17af44219467cc463220e 100644
--- a/chrome/browser/captive_portal/captive_portal_tab_helper.h
+++ b/chrome/browser/captive_portal/captive_portal_tab_helper.h
@@ -20,7 +20,7 @@ class GURL;
 class Profile;
 
 namespace content {
-  class WebContents;
+class WebContents;
 }
 
 namespace net {
@@ -95,6 +95,13 @@ class CaptivePortalTabHelper
   // page.  This is set to false when a captive portal is no longer detected.
   bool IsLoginTab() const;
 
+  // Returns the delay to show an SSL interstitial if a cert error occurs.
+  base::TimeDelta GetSSLErrorDelay() const;
+
+  // Opens a login tab if the profile's active window doesn't have one already.
+  static void OpenLoginTabForWebContents(content::WebContents* web_contents,
+                                         bool focus);
+
  private:
   friend class CaptivePortalBrowserTest;
   friend class CaptivePortalTabHelperTest;
@@ -121,15 +128,14 @@ class CaptivePortalTabHelper
   // |this| takes ownership of |tab_reloader|.
   void SetTabReloaderForTest(CaptivePortalTabReloader* tab_reloader);
 
+  void SetSSLErrorDelayForTest(base::TimeDelta ssl_error_delay);
+
   const content::RenderViewHost* provisional_render_view_host() const {
     return provisional_render_view_host_;
   }
 
   CaptivePortalTabReloader* GetTabReloaderForTest();
 
-  // Opens a login tab if the profile's active window doesn't have one already.
-  void OpenLoginTab();
-
   Profile* profile_;
 
   // Neither of these will ever be NULL.
@@ -143,6 +149,8 @@ class CaptivePortalTabHelper
   // net::OK, otherwise.
   int pending_error_code_;
 
+  base::TimeDelta ssl_error_delay_;
+
   // The RenderViewHost with a provisional load, if any.  Can either be
   // the currently displayed RenderViewHost or a pending RenderViewHost for
   // cross-process navitations.  NULL when there's currently no provisional