Fix keyboard focus for OOPIF-<webview>.

content/browser/frame_host/render_frame_host_impl.h

Index: content/browser/frame_host/render_frame_host_impl.h
diff --git a/content/browser/frame_host/render_frame_host_impl.h b/content/browser/frame_host/render_frame_host_impl.h
index 95e6c634e6fc96492e6ca25bd79c58f1f63522ef..f0862bd384530621a8fabb0136d51c9338f56cee 100644
--- a/content/browser/frame_host/render_frame_host_impl.h
+++ b/content/browser/frame_host/render_frame_host_impl.h
@@ -434,6 +434,10 @@ class CONTENT_EXPORT RenderFrameHostImpl : public RenderFrameHost,
   // cross-process window.focus() calls.
   void SetFocusedFrame();
 
+  // This is used to clear focus inside an inner WebContents when focus shifts
+  // to a frame in the outer WebContents or a sibling WebContents.
+  void ClearFocusedFrame();
+
   // Deletes the current selection plus the specified number of characters
   // before and after the selection or caret.
   void ExtendSelectionAndDelete(size_t before, size_t after);