Implement TouchSelectionEditing controls for OOPIF.

content/browser/renderer_host/render_widget_host_view_base.cc

Index: content/browser/renderer_host/render_widget_host_view_base.cc
diff --git a/content/browser/renderer_host/render_widget_host_view_base.cc b/content/browser/renderer_host/render_widget_host_view_base.cc
index 86a78504f2e40e068307aca9e6933cafe6a49954..901f0c4ccda14d555bc7890c7d75e713f5f87189 100644
--- a/content/browser/renderer_host/render_widget_host_view_base.cc
+++ b/content/browser/renderer_host/render_widget_host_view_base.cc
@@ -478,6 +478,11 @@ void RenderWidgetHostViewBase::RemoveObserver(
   observers_.RemoveObserver(observer);
 }
 
+TouchSelectionControllerClientManager*
+RenderWidgetHostViewBase::touch_selection_controller_client_manager() {
+  return nullptr;
+}
+
 bool RenderWidgetHostViewBase::IsChildFrameForTesting() const {
   return false;
 }