Classify navigations without page id in parallel to the existing classifier.

content/public/test/web_contents_tester.h

Index: content/public/test/web_contents_tester.h
diff --git a/content/public/test/web_contents_tester.h b/content/public/test/web_contents_tester.h
index a96d86deeb1064e3acb56c54bca1956320a2b773..77ef2cc6e9b063fde5fa3ce7973acb5fe60bb147 100644
--- a/content/public/test/web_contents_tester.h
+++ b/content/public/test/web_contents_tester.h
@@ -78,17 +78,28 @@ class WebContentsTester {
   // Does nothing if no cross-navigation is pending.
   virtual void ProceedWithCrossSiteNavigation() = 0;
 
+  // Simulates a navigation with the given information.
+  //
+  // Guidance for calling these:
+  // - nav_entry_id should be 0 if simulating a renderer-initiated navigation;
+  //   if simulating a browser-initiated one, pass the GetUniqueID() value of
+  //   the NavigationController's PendingEntry.
+  // - did_create_new_entry should be true if simulating a navigation that
+  //   created a new navigation entry; false for history navigations, reloads,
+  //   and other navigations that don't affect the history list.
   virtual void TestDidNavigate(RenderFrameHost* render_frame_host,
                                int page_id,
+                               int nav_entry_id,
+                               bool did_create_new_entry,
                                const GURL& url,
                                ui::PageTransition transition) = 0;
-
-  virtual void TestDidNavigateWithReferrer(
-      RenderFrameHost* render_frame_host,
-      int page_id,
-      const GURL& url,
-      const Referrer& referrer,
-      ui::PageTransition transition) = 0;
+  virtual void TestDidNavigateWithReferrer(RenderFrameHost* render_frame_host,
+                                           int page_id,
+                                           int nav_entry_id,
+                                           bool did_create_new_entry,
+                                           const GURL& url,
+                                           const Referrer& referrer,
+                                           ui::PageTransition transition) = 0;
 };
 
 }  // namespace content