Fix keyboard focus for OOPIF-<webview>.

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 9e15211fecddc2047ecbfd92bbe3600eccaa0524..32b9ba57fd0ce6011826b67348b422ad107caac1 100644
--- a/content/browser/frame_host/render_frame_host_impl.cc
+++ b/content/browser/frame_host/render_frame_host_impl.cc
@@ -859,7 +859,7 @@ void RenderFrameHostImpl::OnDetach() {
 }
 
 void RenderFrameHostImpl::OnFrameFocused() {
-  frame_tree_->SetFocusedFrame(frame_tree_node_, GetSiteInstance());
+  delegate_->SetFocusedFrame(frame_tree_node_, GetSiteInstance());
 }
 
 void RenderFrameHostImpl::OnOpenURL(const FrameHostMsg_OpenURL_Params& params) {
@@ -2146,6 +2146,10 @@ void RenderFrameHostImpl::SetFocusedFrame() {
   Send(new FrameMsg_SetFocusedFrame(routing_id_));
 }
 
+void RenderFrameHostImpl::UnsetFocusedFrame() {
+  Send(new FrameMsg_UnsetFocusedFrame(routing_id_));
+}
+
 void RenderFrameHostImpl::ExtendSelectionAndDelete(size_t before,
                                                    size_t after) {
   Send(new InputMsg_ExtendSelectionAndDelete(routing_id_, before, after));