Add a chrome://interstitials page.

chrome/browser/safe_browsing/safe_browsing_blocking_page.cc

Index: chrome/browser/safe_browsing/safe_browsing_blocking_page.cc
diff --git a/chrome/browser/safe_browsing/safe_browsing_blocking_page.cc b/chrome/browser/safe_browsing/safe_browsing_blocking_page.cc
index 5875cb377e678d39fd49a2bf552b971cc9147f5c..ea506d16e2c2d1f889b3b5efbffc540ece1353fb 100644
--- a/chrome/browser/safe_browsing/safe_browsing_blocking_page.cc
+++ b/chrome/browser/safe_browsing/safe_browsing_blocking_page.cc
@@ -873,6 +873,20 @@ SafeBrowsingBlockingPage::UnsafeResourceMap*
 }
 
 // static
+SafeBrowsingBlockingPage* SafeBrowsingBlockingPage::CreateBlockingPage(
+    SafeBrowsingUIManager* ui_manager,
+    WebContents* web_contents,
+    const UnsafeResource& unsafe_resource) {
+  std::vector<UnsafeResource> resources;
+  resources.push_back(unsafe_resource);
+  // Set up the factory if this has not been done already (tests do that
+  // before this method is called).
+  if (!factory_)
+    factory_ = g_safe_browsing_blocking_page_factory_impl.Pointer();
+  return factory_->CreateSafeBrowsingPage(ui_manager, web_contents, resources);
+}
+
+// static
 void SafeBrowsingBlockingPage::ShowBlockingPage(
     SafeBrowsingUIManager* ui_manager,
     const UnsafeResource& unsafe_resource) {
@@ -893,14 +907,8 @@ void SafeBrowsingBlockingPage::ShowBlockingPage(
   if (!interstitial) {
     // There are no interstitial currently showing in that tab, go ahead and
     // show this interstitial.
-    std::vector<UnsafeResource> resources;
-    resources.push_back(unsafe_resource);
-    // Set up the factory if this has not been done already (tests do that
-    // before this method is called).
-    if (!factory_)
-      factory_ = g_safe_browsing_blocking_page_factory_impl.Pointer();
     SafeBrowsingBlockingPage* blocking_page =
-        factory_->CreateSafeBrowsingPage(ui_manager, web_contents, resources);
+        CreateBlockingPage(ui_manager, web_contents, unsafe_resource);
     blocking_page->interstitial_page_->Show();
     return;
   }