PlzNavigate: renderer-initiated navigations create a pending NavigationEntry

content/browser/frame_host/navigator_impl.h

Index: content/browser/frame_host/navigator_impl.h
diff --git a/content/browser/frame_host/navigator_impl.h b/content/browser/frame_host/navigator_impl.h
index acae7a875aa48d0282f78b64c2d6540511a525b9..a1adf41a50dd5a196b1e7a772f696a4a287c93d1 100644
--- a/content/browser/frame_host/navigator_impl.h
+++ b/content/browser/frame_host/navigator_impl.h
@@ -125,6 +125,12 @@ class CONTENT_EXPORT NavigatorImpl : public Navigator {
       const FrameHostMsg_DidCommitProvisionalLoad_Params& params,
       SiteInstance* site_instance);
 
+  // Called when a navigation has started in a main frame, to update the pending
+  // NavigationEntry if the controller does not currently have a
+  // browser-initiated one.
+  void DidStartMainFrameNavigation(const GURL& url,
+                                   SiteInstanceImpl* site_instance);
+
   // The NavigationController that will keep track of session history for all
   // RenderFrameHost objects using this NavigatorImpl.
   // TODO(nasko): Move ownership of the NavigationController from