Support tracking focused node element for OOPIFs.

content/browser/web_contents/web_contents_impl.h

Index: content/browser/web_contents/web_contents_impl.h
diff --git a/content/browser/web_contents/web_contents_impl.h b/content/browser/web_contents/web_contents_impl.h
index aeeeebda43542495c94e91b29c4c7f71db477280..17321a139a02ac18b909cd46a13f680b31abe8c6 100644
--- a/content/browser/web_contents/web_contents_impl.h
+++ b/content/browser/web_contents/web_contents_impl.h
@@ -493,6 +493,9 @@ class CONTENT_EXPORT WebContentsImpl
   std::unique_ptr<WebUIImpl> CreateWebUIForRenderFrameHost(
       const GURL& url) override;
   void SetFocusedFrame(FrameTreeNode* node, SiteInstance* source) override;
+  void OnFocusedElementChangedInFrame(
+      RenderFrameHostImpl* frame,
+      const gfx::Rect& bounds_in_root_view) override;
 
   // RenderViewHostDelegate ----------------------------------------------------
   RenderViewHostDelegateView* GetDelegateView() override;
@@ -563,6 +566,8 @@ class CONTENT_EXPORT WebContentsImpl
   bool IsOverridingUserAgent() override;
   bool IsJavaScriptDialogShowing() const override;
   bool HideDownloadUI() const override;
+  bool IsFocusedElementEditable() override;
+  void ClearFocusedElement() override;
 
   // NavigatorDelegate ---------------------------------------------------------
 
@@ -670,6 +675,7 @@ class CONTENT_EXPORT WebContentsImpl
   void OnFirstPaintAfterLoad(RenderWidgetHostImpl* render_widget_host) override;
   TextInputManager* GetTextInputManager() override;
   bool OnUpdateDragCursor() override;
+  void FocusedNodeTouched(bool editable) override;
 
   // RenderFrameHostManager::Delegate ------------------------------------------