pushState should not be treated as a navigation (step 1 of 3)

content/renderer/render_view_impl.cc

Index: content/renderer/render_view_impl.cc
diff --git a/content/renderer/render_view_impl.cc b/content/renderer/render_view_impl.cc
index be301da3f21dda598e6c03d7cfeb2726186a3631..df6cf39a6c00fae9025c6391268c7702b46cc4f0 100644
--- a/content/renderer/render_view_impl.cc
+++ b/content/renderer/render_view_impl.cc
@@ -2412,6 +2412,10 @@ void RenderViewImpl::initializeHelperPluginWebFrame(
   plugin->initializeFrame(main_render_frame_.get());
 }
 
+void RenderViewImpl::didStartLoading(bool to_different_document) {
+  didStartLoading();
+}
+
 void RenderViewImpl::didStartLoading() {
   if (is_loading_) {
     DVLOG(1) << "didStartLoading called while loading";