OOPIF: Clear old focused frame when focus moves to a cross-process frame.

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 488fad6ac2f16a5c604f863a188a6f637b7552a6..9e611ace533ee46528b4efea5d2e229c82d314a7 100644
--- a/content/browser/frame_host/render_frame_host_impl.cc
+++ b/content/browser/frame_host/render_frame_host_impl.cc
@@ -1817,6 +1817,10 @@ void RenderFrameHostImpl::UpdateOpener() {
   Send(new FrameMsg_UpdateOpener(GetRoutingID(), opener_routing_id));
 }
 
+void RenderFrameHostImpl::ClearFocus() {
+  Send(new FrameMsg_ClearFocus(routing_id_));
+}
+
 void RenderFrameHostImpl::ExtendSelectionAndDelete(size_t before,
                                                    size_t after) {
   Send(new InputMsg_ExtendSelectionAndDelete(routing_id_, before, after));