Implement sequential focus navigation for OOPIF.

content/renderer/render_frame_proxy.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/renderer/render_frame_proxy.h"
 
 #include <map>
 
 #include "base/command_line.h"
 #include "base/lazy_instance.h"
@@ skipping 426 matching lines @@
 
   // Only a LocalFrame (i.e., the caller of window.open) should be able to
   // update another frame's opener.
   DCHECK(opener->isWebLocalFrame());
 
   int opener_routing_id =
       RenderFrameImpl::FromWebFrame(opener->toWebLocalFrame())->GetRoutingID();
   Send(new FrameHostMsg_DidChangeOpener(routing_id_, opener_routing_id));
 }
 
+void RenderFrameProxy::advanceFocus(blink::WebFocusType type,
+                                    blink::WebLocalFrame* source) {
+  int source_routing_id = RenderFrameImpl::FromWebFrame(source)->GetRoutingID();
+  Send(new FrameHostMsg_AdvanceFocus(routing_id_, type, source_routing_id));
+}
+
 }  // namespace