Fix find-in-page re-scope across frame boundaries.

third_party/WebKit/Source/web/WebLocalFrameImpl.h

 /*
  * Copyright (C) 2009 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 214 matching lines @@
     void didCallIsSearchProviderInstalled() override;
     void replaceSelection(const WebString&) override;
     bool find(
         int identifier, const WebString& searchText, const WebFindOptions&,
         bool wrapWithinFrame, WebRect* selectionRect, bool* activeNow = nullptr) override;
     void stopFinding(StopFindAction) override;
     void scopeStringMatches(
         int identifier, const WebString& searchText, const WebFindOptions&,
         bool reset) override;
     void cancelPendingScopingEffort() override;
+    bool scopingInProgress() override;
     void increaseMatchCount(int count, int identifier) override;
     void resetMatchCount() override;
     int findMatchMarkersVersion() const override;
     WebFloatRect activeFindMatchRect() override;
     void findMatchRects(WebVector<WebFloatRect>&) override;
     int selectNearestFindMatch(const WebFloatPoint&, WebRect* selectionRect) override;
     float distanceToNearestFindMatch(const WebFloatPoint&) override;
     void setTickmarks(const WebVector<WebRect>&) override;
     WebFrameWidgetBase* frameWidget() const override;
     void copyImageAt(const WebPoint&) override;
@@ skipping 151 matching lines @@
     // Accomplish that by keeping a self-referential Persistent<>. It is
     // cleared upon close().
     SelfKeepAlive<WebLocalFrameImpl> m_selfKeepAlive;
 };
 
 DEFINE_TYPE_CASTS(WebLocalFrameImpl, WebFrame, frame, frame->isWebLocalFrame(), frame.isWebLocalFrame());
 
 } // namespace blink
 
 #endif