PlzNavigate: add support in several navigation controller unit tests

content/browser/frame_host/navigator_impl.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/browser/frame_host/navigator_impl.h"
 
 #include "base/command_line.h"
 #include "base/metrics/histogram.h"
 #include "base/time/time.h"
 #include "content/browser/frame_host/frame_tree.h"
@@ skipping 868 matching lines @@
   RequestNavigationParams request_params(entry.GetHasPostData(),
                                          entry.extra_headers(),
                                          entry.GetBrowserInitiatedPostData());
   // TODO(clamy): Check if navigations are blocked and if so store the
   // parameters.
 
   // If there is an ongoing request, replace it.
   navigation_request_map_.set(frame_tree_node_id, navigation_request.Pass());
 
   if (frame_tree_node->current_frame_host()->IsRenderFrameLive()) {
+    NavigationRequest* request_to_send =
+        navigation_request_map_.get(frame_tree_node_id);
     frame_tree_node->current_frame_host()->Send(new FrameMsg_RequestNavigation(
         frame_tree_node->current_frame_host()->GetRoutingID(),
-        navigation_request_map_.get(frame_tree_node_id)->common_params(),
-        request_params));
+        request_to_send->common_params(), request_params));
+    request_to_send->SetWaitingForRendererResponse();
     return true;
   }
 
   // The navigation request is sent directly to the IO thread.
   OnBeginNavigation(
       frame_tree_node,
       MakeDefaultBeginNavigation(request_params, navigation_type),
       navigation_request_map_.get(frame_tree_node_id)->common_params());
   return true;
 }
@@ skipping 45 matching lines @@
         "Navigation.TimeToCommit_ExistingRenderer_BeforeUnloadDiscounted",
         time_to_commit);
     UMA_HISTOGRAM_TIMES(
         "Navigation.TimeToURLJobStart_ExistingRenderer_BeforeUnloadDiscounted",
         time_to_network);
   }
   navigation_data_.reset();
 }
 
 }  // namespace content