Implement WebContentsViewChildFrame::TakeFocus.

content/browser/frame_host/render_frame_host_impl.cc

Index: content/browser/frame_host/render_frame_host_impl.cc
diff --git a/content/browser/frame_host/render_frame_host_impl.cc b/content/browser/frame_host/render_frame_host_impl.cc
index 5fee5bf452a8c6375bd263059b599b6a28256a9a..b7f65665278163f0ef81086d495d027886342041 100644
--- a/content/browser/frame_host/render_frame_host_impl.cc
+++ b/content/browser/frame_host/render_frame_host_impl.cc
@@ -2498,6 +2498,17 @@ void RenderFrameHostImpl::SetFocusedFrame() {
   Send(new FrameMsg_SetFocusedFrame(routing_id_));
 }
 
+void RenderFrameHostImpl::AdvanceFocus(blink::WebFocusType type,
+                                       RenderFrameProxyHost* source_proxy) {
+  DCHECK(!source_proxy ||
+         (source_proxy->GetProcess()->GetID() == GetProcess()->GetID()));
+  int32_t source_proxy_routing_id = MSG_ROUTING_NONE;
+  if (source_proxy)
+    source_proxy_routing_id = source_proxy->GetRoutingID();
+  Send(
+      new FrameMsg_AdvanceFocus(GetRoutingID(), type, source_proxy_routing_id));
+}
+
 void RenderFrameHostImpl::ExtendSelectionAndDelete(size_t before,
                                                    size_t after) {
   Send(new InputMsg_ExtendSelectionAndDelete(routing_id_, before, after));