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

third_party/WebKit/public/web/WebLocalFrame.h

 // Copyright 2014 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 WebLocalFrame_h
 #define WebLocalFrame_h
 
 #include "WebFrame.h"
 #include "WebFrameLoadType.h"
 
@@ skipping 338 matching lines @@
     // what to look for and |reset| signals whether this is a brand new
     // request or a continuation of the last scoping effort.
     virtual void scopeStringMatches(int identifier,
         const WebString& searchText,
         const WebFindOptions&,
         bool reset) = 0;
 
     // Cancels any outstanding requests for scoping string matches on a frame.
     virtual void cancelPendingScopingEffort() = 0;
 
+    // Indicates whether there is a scoping effort in progress.
+    virtual bool scopingInProgress() = 0;
+
     // This function is called on the main frame during the scoping effort
     // to keep a running tally of the accumulated total match-count for all
     // frames.  After updating the count it will notify the WebViewClient
     // about the new count.
     virtual void increaseMatchCount(int count, int identifier) = 0;
 
     // This function is called on the main frame to reset the total number
     // of matches found during the scoping effort.
     virtual void resetMatchCount() = 0;
 
@@ skipping 59 matching lines @@
     // to call these on a WebLocalFrame.
     bool isWebLocalFrame() const override = 0;
     WebLocalFrame* toWebLocalFrame() override = 0;
     bool isWebRemoteFrame() const override = 0;
     WebRemoteFrame* toWebRemoteFrame() override = 0;
 };
 
 } // namespace blink
 
 #endif // WebLocalFrame_h