Have Frame::navigationScheduler() return a reference

Source/bindings/v8/ScriptController.cpp

 /*
  * Copyright (C) 2008, 2009 Google Inc. All rights reserved.
  * Copyright (C) 2009 Apple 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.
@@ skipping 581 matching lines @@
         || !m_frame->document()->contentSecurityPolicy()->allowJavaScriptURLs(m_frame->document()->url(), eventHandlerPosition().m_line))
         return true;
 
     // We need to hold onto the Frame here because executing script can
     // destroy the frame.
     RefPtr<Frame> protector(m_frame);
     RefPtr<Document> ownerDocument(m_frame->document());
 
     const int javascriptSchemeLength = sizeof("javascript:") - 1;
 
-    bool locationChangeBefore = m_frame->navigationScheduler()->locationChangePending();
+    bool locationChangeBefore = m_frame->navigationScheduler().locationChangePending();
 
     String decodedURL = decodeURLEscapeSequences(url.string());
     ScriptValue result = evaluateScriptInMainWorld(ScriptSourceCode(decodedURL.substring(javascriptSchemeLength)), NotSharableCrossOrigin, DoNotExecuteScriptWhenScriptsDisabled);
 
     // If executing script caused this frame to be removed from the page, we
     // don't want to try to replace its document!
     if (!m_frame->page())
         return true;
 
     String scriptResult;
     if (!result.getString(scriptResult))
         return true;
 
     // We're still in a frame, so there should be a DocumentLoader.
     ASSERT(m_frame->document()->loader());
 
-    if (!locationChangeBefore && m_frame->navigationScheduler()->locationChangePending())
+    if (!locationChangeBefore && m_frame->navigationScheduler().locationChangePending())
         return true;
 
     // DocumentWriter::replaceDocument can cause the DocumentLoader to get deref'ed and possible destroyed,
     // so protect it with a RefPtr.
     if (RefPtr<DocumentLoader> loader = m_frame->document()->loader())
         loader->replaceDocument(scriptResult, ownerDocument.get());
     return true;
 }
 
 void ScriptController::executeScriptInMainWorld(const String& script, ExecuteScriptPolicy policy)
@@ skipping 69 matching lines @@
         v8Results = evaluateHandleScope.Close(resultArray);
     }
 
     if (results && !v8Results.IsEmpty()) {
         for (size_t i = 0; i < v8Results->Length(); ++i)
             results->append(ScriptValue(v8Results->Get(i), m_isolate));
     }
 }
 
 } // namespace WebCore