Set navigationStart correctly for all load types.

content/public/test/mock_render_thread.h

Index: content/public/test/mock_render_thread.h
diff --git a/content/public/test/mock_render_thread.h b/content/public/test/mock_render_thread.h
index 909b3530ce3b2446818dab16ce794ce8ac885346..84184f42329874b658fa03bdfd5d0a69870eb462 100644
--- a/content/public/test/mock_render_thread.h
+++ b/content/public/test/mock_render_thread.h
@@ -93,8 +93,18 @@ class MockRenderThread : public RenderThread {
 
   int32_t opener_id() const { return opener_id_; }
 
+  int32_t new_window_routing_id() const { return new_window_routing_id_; }
+
   void set_new_window_routing_id(int32_t id) { new_window_routing_id_ = id; }
 
+  int32_t new_window_main_frame_routing_id() const {
+    return new_window_main_frame_routing_id_;
+  }
+
+  void set_new_window_main_frame_routing_id(int32_t id) {
+    new_window_main_frame_routing_id_ = id;
+  }
+
   void set_new_window_main_frame_widget_routing_id(int32_t id) {
     new_window_main_frame_widget_routing_id_ = id;
   }