Fix the handling of user gestures for external protocol handler dialogs.

content/browser/loader/resource_dispatcher_host_impl.cc

Index: content/browser/loader/resource_dispatcher_host_impl.cc
diff --git a/content/browser/loader/resource_dispatcher_host_impl.cc b/content/browser/loader/resource_dispatcher_host_impl.cc
index 173202e1a59fb415b731dceb5c3131ae26ebf105..5ebfaefc91657a1b26ad6e0a1cc6ce12fe7cd28f 100644
--- a/content/browser/loader/resource_dispatcher_host_impl.cc
+++ b/content/browser/loader/resource_dispatcher_host_impl.cc
@@ -661,6 +661,10 @@ ResourceDispatcherHostImpl::CreateLoginDelegate(
   return delegate_->CreateLoginDelegate(auth_info, loader->request());
 }
 
+bool RequestHasRecentUserGesture(const net::URLRequest* request) {
+  return (request->load_flags() & net::LOAD_MAYBE_USER_GESTURE) != 0;
+}
+
 bool ResourceDispatcherHostImpl::HandleExternalProtocol(ResourceLoader* loader,
                                                         const GURL& url) {
   if (!delegate_)
@@ -676,8 +680,14 @@ bool ResourceDispatcherHostImpl::HandleExternalProtocol(ResourceLoader* loader,
   if (job_factory->IsHandledURL(url))
     return false;
 
-  return delegate_->HandleExternalProtocol(url, info->GetChildID(),
-                                           info->GetRouteID());
+  bool user_gesture = RequestHasRecentUserGesture(loader->request());
+  bool handled = delegate_->HandleExternalProtocol(url, info->GetChildID(),
+                                                   info->GetRouteID(),
+                                                   user_gesture);
+  // Consume the user gesture if the external protocol dialog is shown.
+  if (handled)
+    last_user_gesture_time_ = base::TimeTicks();
+  return handled;
 }
 
 void ResourceDispatcherHostImpl::DidStartRequest(ResourceLoader* loader) {