Service CreateNewWindow on the UI thread with a new mojo interface

content/browser/frame_host/render_frame_host_impl.h

Index: content/browser/frame_host/render_frame_host_impl.h
diff --git a/content/browser/frame_host/render_frame_host_impl.h b/content/browser/frame_host/render_frame_host_impl.h
index 7d13f014509fd56b4baee438c257864ab13d99d2..b0415192aec3fb6fb8323921f83d9cba34d9db46 100644
--- a/content/browser/frame_host/render_frame_host_impl.h
+++ b/content/browser/frame_host/render_frame_host_impl.h
@@ -83,6 +83,7 @@ class Range;
 
 namespace content {
 class AssociatedInterfaceProviderImpl;
+class AssociatedInterfaceRegistryImpl;
 class FeaturePolicy;
 class FrameTree;
 class FrameTreeNode;
@@ -115,6 +116,7 @@ class CONTENT_EXPORT RenderFrameHostImpl
     : public RenderFrameHost,
       public base::SupportsUserData,
       NON_EXPORTED_BASE(public mojom::FrameHost),
+      NON_EXPORTED_BASE(public mojom::FrameHostIPC),
       public BrowserAccessibilityDelegate,
       public SiteInstanceImpl::Observer,
       public NON_EXPORTED_BASE(
@@ -793,6 +795,17 @@ class CONTENT_EXPORT RenderFrameHostImpl
                            const gfx::Rect& initial_rect,
                            bool user_gesture);
 
+  // mojom::FrameHostIPC
+  void CreateNewWindow(mojom::CreateNewWindowParamsPtr params,
+                       const CreateNewWindowCallback& callback) override;
+
+  void RunCreateWindowCompleteCallback(const CreateNewWindowCallback& callback,
+                                       mojom::CreateNewWindowReplyPtr reply,
+                                       int render_view_route_id,
+                                       int main_frame_route_id,
+                                       int main_frame_widget_route_id,
+                                       int cloned_session_storage_namespace_id);
+
   // Registers Mojo interfaces that this frame host makes available.
   void RegisterMojoInterfaces();
 
@@ -1040,6 +1053,8 @@ class CONTENT_EXPORT RenderFrameHostImpl
   // SiteInstance.  May be null in tests.
   std::unique_ptr<TimeoutMonitor> swapout_event_monitor_timeout_;
 
+  std::unique_ptr<AssociatedInterfaceRegistryImpl> associated_registry_;
+
   std::unique_ptr<service_manager::InterfaceRegistry> interface_registry_;
   std::unique_ptr<service_manager::InterfaceProvider> remote_interfaces_;
 
@@ -1127,6 +1142,7 @@ class CONTENT_EXPORT RenderFrameHostImpl
   PreviewsState last_navigation_previews_state_;
 
   mojo::Binding<mojom::FrameHost> frame_host_binding_;
+  mojo::AssociatedBinding<mojom::FrameHostIPC> frame_host_associated_binding_;
   mojom::FramePtr frame_;
   mojom::FrameBindingsControlAssociatedPtr frame_bindings_control_;