Fix keyboard focus for OOPIF-<webview>.

content/renderer/render_frame_impl.cc

Index: content/renderer/render_frame_impl.cc
diff --git a/content/renderer/render_frame_impl.cc b/content/renderer/render_frame_impl.cc
index c8d67f4fa7d44c84f008e98d0f8444651c0ace9c..0da5a4b358b069f6c4992e8b41fb071240cc8d9c 100644
--- a/content/renderer/render_frame_impl.cc
+++ b/content/renderer/render_frame_impl.cc
@@ -1555,6 +1555,7 @@ bool RenderFrameImpl::OnMessageReceived(const IPC::Message& msg) {
                         OnSetFrameOwnerProperties)
     IPC_MESSAGE_HANDLER(FrameMsg_AdvanceFocus, OnAdvanceFocus)
     IPC_MESSAGE_HANDLER(FrameMsg_SetFocusedFrame, OnSetFocusedFrame)
+    IPC_MESSAGE_HANDLER(FrameMsg_ClearFocusedFrame, OnClearFocusedFrame)
     IPC_MESSAGE_HANDLER(FrameMsg_SetTextTrackSettings,
                         OnTextTrackSettingsChanged)
     IPC_MESSAGE_HANDLER(FrameMsg_PostMessageEvent, OnPostMessageEvent)
@@ -2155,6 +2156,10 @@ void RenderFrameImpl::OnSetFocusedFrame() {
   render_view_->webview()->focusDocumentView(frame_);
 }
 
+void RenderFrameImpl::OnClearFocusedFrame() {
+  render_view_->webview()->unfocusDocumentView();
+}
+
 void RenderFrameImpl::OnTextTrackSettingsChanged(
     const FrameMsg_TextTrackSettings_Params& params) {
   DCHECK(!frame_->parent());