Move DidStartLoading, DidStopLoading, DidChangeLoadProgress to RFHI.

content/browser/frame_host/navigator_impl.cc

Index: content/browser/frame_host/navigator_impl.cc
diff --git a/content/browser/frame_host/navigator_impl.cc b/content/browser/frame_host/navigator_impl.cc
index d6ac418ebe47f48e932a2586a535d63b922cdaf3..ee814eae99e9b1778483a3b85d50ac2289bd1ebe 100644
--- a/content/browser/frame_host/navigator_impl.cc
+++ b/content/browser/frame_host/navigator_impl.cc
@@ -608,6 +608,20 @@ void NavigatorImpl::RequestTransferURL(
     delegate_->RequestOpenURL(render_frame_host, params);
 }
 
+void NavigatorImpl::DidStartLoading(FrameTreeNode* frame_tree_node,
+                                    bool to_different_document) {
+  delegate_->DidStartLoading(frame_tree_node,
+                             to_different_document);
+}
+
+void NavigatorImpl::DidStopLoading() {
+  delegate_->DidStopLoading();
+}
+
+void NavigatorImpl::DidChangeLoadProgress() {
+  delegate_->DidChangeLoadProgress();
+}
+
 // PlzNavigate
 void NavigatorImpl::OnBeforeUnloadACK(FrameTreeNode* frame_tree_node,
                                       bool proceed) {