Move DidStartLoading, DidStopLoading, DidChangeLoadProgress to RFHI.

content/browser/frame_host/interstitial_page_navigator_impl.cc

Index: content/browser/frame_host/interstitial_page_navigator_impl.cc
diff --git a/content/browser/frame_host/interstitial_page_navigator_impl.cc b/content/browser/frame_host/interstitial_page_navigator_impl.cc
index fc45950742d3ad8007dd948aad406be4b69f22e3..cb4eeb701aebb6789309499f24e218b550f15267 100644
--- a/content/browser/frame_host/interstitial_page_navigator_impl.cc
+++ b/content/browser/frame_host/interstitial_page_navigator_impl.cc
@@ -15,12 +15,17 @@ InterstitialPageNavigatorImpl::InterstitialPageNavigatorImpl(
     InterstitialPageImpl* interstitial,
     NavigationControllerImpl* navigation_controller)
     : interstitial_(interstitial),
-      controller_(navigation_controller) {}
+      controller_(navigation_controller) {
+}
 
 NavigationController* InterstitialPageNavigatorImpl::GetController() {
   return controller_;
 }
 
+NavigatorDelegate* InterstitialPageNavigatorImpl::GetDelegate() {
+  return interstitial_;
+}
+
 void InterstitialPageNavigatorImpl::DidNavigate(
     RenderFrameHostImpl* render_frame_host,
     const FrameHostMsg_DidCommitProvisionalLoad_Params& input_params) {