Add a chrome://interstitials page.

chrome/browser/ssl/ssl_blocking_page.cc

Index: chrome/browser/ssl/ssl_blocking_page.cc
diff --git a/chrome/browser/ssl/ssl_blocking_page.cc b/chrome/browser/ssl/ssl_blocking_page.cc
index ca97c2b60a0a90009235bd3716fc0b3b657f2126..f7bc5a509e00269e895b9172c802964af9aa56b6 100644
--- a/chrome/browser/ssl/ssl_blocking_page.cc
+++ b/chrome/browser/ssl/ssl_blocking_page.cc
@@ -278,9 +278,12 @@ SSLBlockingPage::SSLBlockingPage(
                  content::Source<Profile>(profile));
 #endif
 
+  // chrome://interstitials page uses this class without actually creating an
+  // interstitial so that it can be debugged. Set |create_interstitial| to true
+  // if the page is going to be used as an actual interstitial and not just part
+  // of the chrome://interstitials webui.
   interstitial_page_ = InterstitialPage::Create(
       web_contents_, true, request_url, this);
-  interstitial_page_->Show();
 }
 
 SSLBlockingPage::~SSLBlockingPage() {
@@ -300,6 +303,41 @@ SSLBlockingPage::~SSLBlockingPage() {
   }
 }
 
+// static
+void SSLBlockingPage::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) {
+  SSLBlockingPage* ssl_blocking_page = new SSLBlockingPage(web_contents,
+                                                           cert_error,
+                                                           ssl_info,
+                                                           request_url,
+                                                           overridable,
+                                                           strict_enforcement,
+                                                           callback);
+  ssl_blocking_page->interstitial_page_->Show();
+}
+
+// static
+SSLBlockingPage* SSLBlockingPage::CreateForWebUI(
+    content::WebContents* web_contents,
+    int cert_error,
+    const net::SSLInfo& ssl_info,
+    const GURL& request_url,
+    bool overridable,
+    bool strict_enforcement) {
+  return new SSLBlockingPage(web_contents,
+                             cert_error,
+                             ssl_info,
+                             request_url,
+                             overridable,
+                             strict_enforcement,
+                             base::Callback<void(bool)>());
+}
+
 std::string SSLBlockingPage::GetHTMLContents() {
   if (trial_condition_ == kCondV1 || trial_condition_ == kCondV1LayoutV2Text)
     return GetHTMLContentsV1();