Change allowed bindings to be per RenderFrame instead of per RenderView.

headless/lib/browser/headless_web_contents_impl.cc

Index: headless/lib/browser/headless_web_contents_impl.cc
diff --git a/headless/lib/browser/headless_web_contents_impl.cc b/headless/lib/browser/headless_web_contents_impl.cc
index 014e48240c9421b45e62f93a59174163738875a6..874a2605d4acd5c5db87f950a27c9c163e4837e7 100644
--- a/headless/lib/browser/headless_web_contents_impl.cc
+++ b/headless/lib/browser/headless_web_contents_impl.cc
@@ -174,8 +174,7 @@ HeadlessWebContentsImpl::~HeadlessWebContentsImpl() {
 void HeadlessWebContentsImpl::RenderFrameCreated(
     content::RenderFrameHost* render_frame_host) {
   if (!mojo_services_.empty()) {
-    render_frame_host->GetRenderViewHost()->AllowBindings(
-        content::BINDINGS_POLICY_HEADLESS);
+    render_frame_host->AllowBindings(content::BINDINGS_POLICY_HEADLESS);
   }
 
   service_manager::InterfaceRegistry* interface_registry =