Service CreateNewWindow on the UI thread with a new mojo interface

content/renderer/render_frame_impl.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/renderer/render_frame_impl.h"
 
 #include <map>
 #include <string>
 #include <utility>
 #include <vector>
@@ skipping 5183 matching lines @@
 
   for (auto& observer : observers_)
     observer.FocusedNodeChanged(node);
 }
 
 void RenderFrameImpl::FocusedNodeChangedForAccessibility(const WebNode& node) {
   if (render_accessibility())
     render_accessibility()->AccessibilityFocusedNodeChanged(node);
 }
 
+mojom::FrameHostIPC* RenderFrameImpl::GetFrameHostIPC() {
+  if (!frame_host_ipc_)
+    GetRemoteAssociatedInterfaces()->GetInterface(&frame_host_ipc_);
+  return frame_host_ipc_.get();
+}
+
 // PlzNavigate
 void RenderFrameImpl::OnCommitNavigation(
     const ResourceResponseHead& response,
     const GURL& stream_url,
     mojo::DataPipeConsumerHandle handle,
     const CommonNavigationParams& common_params,
     const RequestNavigationParams& request_params) {
   CHECK(IsBrowserSideNavigationEnabled());
   // This will override the url requested by the WebURLLoader, as well as
   // provide it with the response to the request.
@@ skipping 1777 matching lines @@
       policy(info.default_policy),
       replaces_current_history_item(info.replaces_current_history_item),
       history_navigation_in_new_child_frame(
           info.is_history_navigation_in_new_child_frame),
       client_redirect(info.is_client_redirect),
       cache_disabled(info.is_cache_disabled),
       form(info.form),
       source_location(info.source_location) {}
 
 }  // namespace content