PlzNavigate: Invoke didFailProvisionalLoad() in the renderer when a navigation request is cancelled…

content/browser/frame_host/navigation_request.cc

Index: content/browser/frame_host/navigation_request.cc
diff --git a/content/browser/frame_host/navigation_request.cc b/content/browser/frame_host/navigation_request.cc
index 4b1bd89edc252d09ef42281fd9448fcd639c6142..eedaa26c2e68b4661c1fc08911f209ae15e1b862 100644
--- a/content/browser/frame_host/navigation_request.cc
+++ b/content/browser/frame_host/navigation_request.cc
@@ -694,6 +694,13 @@ void NavigationRequest::OnWillProcessResponseChecksComplete(
     // TODO(clamy): distinguish between CANCEL and CANCEL_AND_IGNORE.
     frame_tree_node_->navigator()->DiscardPendingEntryIfNeeded(
         navigation_handle_.get());
+    // Select an appropriate RenderFrameHost.
+    RenderFrameHostImpl* render_frame_host =
+        frame_tree_node_->render_manager()->GetFrameHostForNavigation(*this);
+    if (render_frame_host) {
+      render_frame_host->AbortNavigationRequest(common_params().url,
+                                                net::ERR_ABORTED);
+    }
     frame_tree_node_->ResetNavigationRequest(false);
     return;
   }