Fix for PDF find-in-page bug.

third_party/WebKit/public/web/WebPlugin.h

 /*
  * Copyright (C) 2009, 2012 Google Inc. All rights reserved.
  * Copyright (C) 2014 Opera Software ASA. 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.
@@ skipping 154 matching lines @@
     // Otherwise an empty url is returned.
     virtual WebURL linkAtPosition(const WebPoint& position) const { return WebURL(); }
 
     // Find interface.
     // Start a new search.  The plugin should search for a little bit at a time so that it
     // doesn't block the thread in case of a large document.  The results, along with the
     // find's identifier, should be sent asynchronously to WebFrameClient's reportFindInPage* methods.
     // Returns true if the search started, or false if the plugin doesn't support search.
     virtual bool startFind(const WebString& searchText, bool caseSensitive, int identifier) { return false; }
     // Tells the plugin to jump forward or backward in the list of find results.
-    virtual void selectFindResult(bool forward) { }
+    virtual void selectFindResult(bool forward, int identifier) { }
     // Tells the plugin that the user has stopped the find operation.
     virtual void stopFind() { }
 
     // View rotation types.
     enum RotationType {
         RotationType90Clockwise,
         RotationType90Counterclockwise
     };
     // Whether the plugin can rotate the view of its content.
     virtual bool canRotateView() { return false; }
     // Rotates the plugin's view of its content.
     virtual void rotateView(RotationType type) { }
 
     virtual bool isPlaceholder() { return true; }
 
 protected:
     ~WebPlugin() { }
 };
 
 } // namespace blink
 
 #endif