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 25b2262f9b04b79d4d62996514af921e0998a259..a664c77d19fdf408709e80318cf0fa6beb0df268 100644
--- a/content/browser/frame_host/render_frame_host_impl.cc
+++ b/content/browser/frame_host/render_frame_host_impl.cc
@@ -2532,6 +2532,17 @@ 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));