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 75ee58153b242cc359ea2d4a2a72834d5109f920..e77cba2d94b8f44e475152cb0ad469ac2e72c568 100644
--- a/content/renderer/render_frame_impl.cc
+++ b/content/renderer/render_frame_impl.cc
@@ -1490,6 +1490,7 @@ 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)
@@ -2090,6 +2091,10 @@ void RenderFrameImpl::OnSetFocusedFrame() {
   render_view_->webview()->focusDocumentView(frame_);
 }
 
+void RenderFrameImpl::OnClearFocusedFrame() {
+  render_view_->webview()->unfocusDocumentView(frame_);
+}
+
 void RenderFrameImpl::OnTextTrackSettingsChanged(
     const FrameMsg_TextTrackSettings_Params& params) {
   DCHECK(!frame_->parent());