Export BindingSecurity checks via WebFrame

public/web/WebFrame.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 329 matching lines @@
         int argc,
         v8::Local<v8::Value> argv[]) = 0;
 
     // Returns the V8 context for associated with the main world and this
     // frame. There can be many V8 contexts associated with this frame, one for
     // each isolated world and one for the main world. If you don't know what
     // the "main world" or an "isolated world" is, then you probably shouldn't
     // be calling this API.
     virtual v8::Local<v8::Context> mainWorldScriptContext() const = 0;
 
+
+    // Returns true if the WebFrame currently executing JavaScript has access
+    // to the given WebFrame, or false otherwise.
+    BLINK_EXPORT static bool scriptCanAccess(WebFrame*);
+
+
     // Navigation ----------------------------------------------------------
 
     // Reload the current document.
     // True |ignoreCache| explicitly bypasses caches.
     // False |ignoreCache| revalidates any existing cache entries.
     virtual void reload(bool ignoreCache = false) = 0;
 
     // This is used for situations where we want to reload a different URL because of a redirect.
     virtual void reloadWithOverrideURL(const WebURL& overrideUrl, bool ignoreCache = false) = 0;
 
@@ skipping 374 matching lines @@
     WebPrivateOwnPtr<OpenedFrameTracker> m_openedFrameTracker;
 };
 
 #if BLINK_IMPLEMENTATION
 Frame* toCoreFrame(const WebFrame*);
 #endif
 
 } // namespace blink
 
 #endif