Add WebLocalFrame::effectiveSandboxFlags()

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 141 matching lines @@
     // Image reload -----------------------------------------------------------
 
     // If the provided node is an image, reload the image bypassing the cache.
     virtual void reloadImage(const WebNode&) = 0;
 
     // Testing ----------------------------------------------------------------
 
     // Registers a test interface factory. Takes ownership of the factory.
     virtual void registerTestInterface(const WebString& name, WebTestInterfaceFactory*) = 0;
 
+    // Iframe sandbox ---------------------------------------------------------
+
+    // Returns the effective sandbox flags which are inherited from their parent frame.
+    virtual WebSandboxFlags effectiveSandboxFlags() const = 0;
+
 protected:
     explicit WebLocalFrame(WebTreeScopeType scope) : WebFrame(scope) { }
 };
 
 } // namespace blink
 
 #endif // WebLocalFrame_h
-