Fix keyboard focus for OOPIF-<webview>.

content/browser/frame_host/render_frame_host_delegate.h

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CONTENT_BROWSER_FRAME_HOST_RENDER_FRAME_HOST_DELEGATE_H_
 #define CONTENT_BROWSER_FRAME_HOST_RENDER_FRAME_HOST_DELEGATE_H_
 
 #include <stdint.h>
 
 #include <vector>
@@ skipping 12 matching lines @@
 #include "ui/gfx/native_widget_types.h"
 #endif
 
 class GURL;
 
 namespace IPC {
 class Message;
 }
 
 namespace content {
+class FrameTreeNode;
 class GeolocationServiceContext;
 class InterstitialPage;
 class PageState;
 class RenderFrameHost;
 class WakeLockServiceContext;
 class WebContents;
 struct AXEventNotificationDetails;
 struct ContextMenuParams;
 struct FileChooserParams;
 struct TransitionLayerData;
@@ skipping 134 matching lines @@
   //
   // TODO(alexmos): This method currently supports cross-process postMessage,
   // where we may need to create any missing proxies for the message's source
   // frame and its opener chain. It currently exists in WebContents due to a
   // special case for <webview> guests, but this logic should eventually be
   // moved down into RenderFrameProxyHost::RouteMessageEvent when <webview>
   // refactoring for --site-per-process mode is further along.  See
   // https://crbug.com/330264.
   virtual void EnsureOpenerProxiesExist(RenderFrameHost* source_rfh) {}
 
+  // Set the |node| frame as focused in the current FrameTree as well as
+  // possibly changing focus in distinct but related inner/outer WebContents.
+  virtual void SetFocusedFrame(FrameTreeNode* node, SiteInstance* source) {}
+
   // Creates a WebUI object for a frame navigating to |url|. If no WebUI
   // applies, returns null.
   virtual std::unique_ptr<WebUIImpl> CreateWebUIForRenderFrameHost(
       const GURL& url);
 
  protected:
   virtual ~RenderFrameHostDelegate() {}
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_FRAME_HOST_RENDER_FRAME_HOST_DELEGATE_H_