Add support for edit commands in OOPIFs.

content/browser/renderer_host/render_widget_host_view_aura.cc

Index: content/browser/renderer_host/render_widget_host_view_aura.cc
diff --git a/content/browser/renderer_host/render_widget_host_view_aura.cc b/content/browser/renderer_host/render_widget_host_view_aura.cc
index c681785cb705010ce713840ddd9c68ad69bc198e..d6717a6bd22b42789da1473a407259d9054067b3 100644
--- a/content/browser/renderer_host/render_widget_host_view_aura.cc
+++ b/content/browser/renderer_host/render_widget_host_view_aura.cc
@@ -2726,8 +2726,7 @@ void RenderWidgetHostViewAura::ForwardKeyboardEvent(
       edit_commands.push_back(EditCommand(it->GetCommandString(),
                                           it->argument()));
     }
-    // TODO(alexmos): This needs to be refactored to work with subframe
-    // RenderWidgetHosts for OOPIF.  See https://crbug.com/549334.
+
     target_host->Send(new InputMsg_SetEditCommandsForNextKeyEvent(
         target_host->GetRoutingID(), edit_commands));
     target_host->ForwardKeyboardEvent(event);