Various mojom cleanup from ContentHandler changes.

mojo/services/html_viewer/html_document_view.cc

Index: mojo/services/html_viewer/html_document_view.cc
diff --git a/mojo/services/html_viewer/html_document_view.cc b/mojo/services/html_viewer/html_document_view.cc
index 6b640122389bcdc684cd940b025063a567dd7edf..d0c48f8b8466c0cb301417d2a17c50220de3dcee 100644
--- a/mojo/services/html_viewer/html_document_view.cc
+++ b/mojo/services/html_viewer/html_document_view.cc
@@ -191,12 +191,9 @@ blink::WebNavigationPolicy HTMLDocumentView::decidePolicyForNavigation(
   if (CanNavigateLocally(frame, request))
     return default_policy;
 
-  NavigationDetailsPtr nav_details(NavigationDetails::New());
-  nav_details->request = URLRequest::From(request);
-
   navigator_host_->RequestNavigate(
       WebNavigationPolicyToNavigationTarget(default_policy),
-      nav_details.Pass());
+      URLRequest::From(request).Pass());
 
   return blink::WebNavigationPolicyIgnore;
 }