Fix unused functions warnings on Linux.

Source/core/loader/FrameLoader.cpp

 /*
  * Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies)
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  * Copyright (C) 2008 Alp Toker <alp@atoker.com>
  * Copyright (C) Research In Motion Limited 2009. All rights reserved.
  * Copyright (C) 2011 Kris Jordan <krisjordan@gmail.com>
  * Copyright (C) 2011 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ skipping 84 matching lines @@
 
 using namespace HTMLNames;
 
 static const char defaultAcceptHeader[] = "text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8";
 
 bool isBackForwardLoadType(FrameLoadType type)
 {
     return type == FrameLoadTypeBackForward;
 }
 
-// This is not in the FrameLoader class to emphasize that it does not depend on
-// private FrameLoader data, and to avoid increasing the number of public functions
-// with access to private data.  Since only this .cpp file needs it, making it
-// non-member lets us exclude it from the header file, thus keeping core/loader/FrameLoader.h's
-// API simpler.
-//
-static bool isDocumentSandboxed(Frame* frame, SandboxFlags mask)
-{
-    return frame->document() && frame->document()->isSandboxed(mask);
-}
-
 class FrameLoader::FrameProgressTracker {
 public:
     static PassOwnPtr<FrameProgressTracker> create(Frame* frame) { return adoptPtr(new FrameProgressTracker(frame)); }
     ~FrameProgressTracker()
     {
         ASSERT(!m_inProgress || m_frame->page());
         if (m_inProgress)
             m_frame->page()->progress().progressCompleted(m_frame);
     }
 
@@ skipping 1475 matching lines @@
 {
     SandboxFlags flags = m_forcedSandboxFlags;
     if (Frame* parentFrame = m_frame->tree().parent())
         flags |= parentFrame->document()->sandboxFlags();
     if (HTMLFrameOwnerElement* ownerElement = m_frame->ownerElement())
         flags |= ownerElement->sandboxFlags();
     return flags;
 }
 
 } // namespace WebCore