PlzNavigate: don't stop all loaders when renderer-initiated nav fails

content/renderer/render_frame_impl.cc

Index: content/renderer/render_frame_impl.cc
diff --git a/content/renderer/render_frame_impl.cc b/content/renderer/render_frame_impl.cc
index a3da37ba15924815c423a4654045bb9be5b22ef9..2fc304be43fd2f85512dd3f448c2ef5af0f83af0 100644
--- a/content/renderer/render_frame_impl.cc
+++ b/content/renderer/render_frame_impl.cc
@@ -1589,6 +1589,7 @@ bool RenderFrameImpl::OnMessageReceived(const IPC::Message& msg) {
     IPC_MESSAGE_HANDLER(FrameMsg_FailedNavigation, OnFailedNavigation)
     IPC_MESSAGE_HANDLER(FrameMsg_ReportContentSecurityPolicyViolation,
                         OnReportContentSecurityPolicyViolation)
+    IPC_MESSAGE_HANDLER(FrameMsg_DroppedNavigation, OnDroppedNavigation)
     IPC_MESSAGE_HANDLER(FrameMsg_GetSavableResourceLinks,
                         OnGetSavableResourceLinks)
     IPC_MESSAGE_HANDLER(FrameMsg_GetSerializedHtmlWithLocalLinks,
@@ -5312,6 +5313,16 @@ void RenderFrameImpl::OnReportContentSecurityPolicyViolation(
       BuildWebContentSecurityPolicyViolation(violation_params));
 }
 
+void RenderFrameImpl::OnDroppedNavigation(int navigation_id) {
+  // Check that the navigation dropped was the last one sent to the browser
+  // process. If not, do nothing as the browser process still has some more
+  // navigations to process.
+  if (navigation_id != navigation_id_)
+    return;
+  browser_side_navigation_pending_ = false;
+  frame_->clientDroppedNavigation();
+}
+
 WebNavigationPolicy RenderFrameImpl::decidePolicyForNavigation(
     const NavigationPolicyInfo& info) {
   // A content initiated navigation may have originated from a link-click,
@@ -6399,7 +6410,7 @@ void RenderFrameImpl::BeginNavigation(const NavigationPolicyInfo& info) {
           blink::WebURLRequest::ServiceWorkerMode::All,
       GetRequestContextTypeForWebURLRequest(info.urlRequest),
       GetMixedContentContextTypeForWebURLRequest(info.urlRequest),
-      is_form_submission, initiator_origin);
+      is_form_submission, initiator_origin, ++navigation_id_);
 
   if (!info.form.isNull()) {
     WebSearchableFormData web_searchable_form_data(info.form);