PlzNavigate: support NavigationThrottle::WillProcessResponse

content/browser/frame_host/navigator.cc

Index: content/browser/frame_host/navigator.cc
diff --git a/content/browser/frame_host/navigator.cc b/content/browser/frame_host/navigator.cc
index 2e61443ce6e2fabdd1e9a041248d3c274b1a9e39..ac6c248cae6618d9d002d8a00d727bac1bbd0f10 100644
--- a/content/browser/frame_host/navigator.cc
+++ b/content/browser/frame_host/navigator.cc
@@ -42,9 +42,4 @@ void Navigator::OnBeginNavigation(
     scoped_refptr<ResourceRequestBody> body) {
 }
 
-void Navigator::CommitNavigation(NavigationRequest* navigation_request,
-                                 ResourceResponse* response,
-                                 scoped_ptr<StreamHandle> body) {
-}
-
 }  // namespace content