Move DidStartLoading, DidStopLoading, DidChangeLoadProgress to RFHI.

content/browser/frame_host/navigator_impl.h

Index: content/browser/frame_host/navigator_impl.h
diff --git a/content/browser/frame_host/navigator_impl.h b/content/browser/frame_host/navigator_impl.h
index debf309aba67d4d3918bab66bedd250f7993ac0a..02a71fd94ea16253d798727c003416fabf8bb29b 100644
--- a/content/browser/frame_host/navigator_impl.h
+++ b/content/browser/frame_host/navigator_impl.h
@@ -52,6 +52,10 @@ class CONTENT_EXPORT NavigatorImpl : public Navigator {
   bool NavigateToPendingEntry(
       FrameTreeNode* frame_tree_node,
       NavigationController::ReloadType reload_type) override;
+  void DidStartLoading(FrameTreeNode* frame_tree_node,
+                       bool to_different_document) override;
+  void DidStopLoading() override;
+  void DidChangeLoadProgress() override;
   void RequestOpenURL(RenderFrameHostImpl* render_frame_host,
                       const GURL& url,
                       SiteInstance* source_site_instance,