Apply OwnPtr|PassOwnPtr to member variables and arguments in ContextFeatures.

Source/core/dom/ContextFeatures.cpp

 /*
  * Copyright (C) 2012 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.
  *     * Neither the name of Google Inc. nor the names of its
@@ skipping 15 matching lines @@
 
 #include "config.h"
 #include "core/dom/ContextFeatures.h"
 
 #include "RuntimeEnabledFeatures.h"
 #include "core/dom/Document.h"
 #include "core/page/Page.h"
 
 namespace WebCore {
 
-ContextFeaturesClient* ContextFeaturesClient::empty()
+PassOwnPtr<ContextFeaturesClient> ContextFeaturesClient::empty()
 {
-    DEFINE_STATIC_LOCAL(ContextFeaturesClient, empty, ());
-    return &empty;
+    return adoptPtr(new ContextFeaturesClient());
 }
 
 const char* ContextFeatures::supplementName()
 {
     return "ContextFeatures";
 }
 
 ContextFeatures* ContextFeatures::defaultSwitch()
 {
     DEFINE_STATIC_REF(ContextFeatures, instance, (ContextFeatures::create(ContextFeaturesClient::empty())));
@@ skipping 27 matching lines @@
     if (!document)
         return true;
     return document->contextFeatures().isEnabled(document, MutationEvents, true);
 }
 
 bool ContextFeatures::pushStateEnabled(Document* document)
 {
     return document->contextFeatures().isEnabled(document, PushState, true);
 }
 
-void provideContextFeaturesTo(Page& page, ContextFeaturesClient* client)
+void provideContextFeaturesTo(Page& page, PassOwnPtr<ContextFeaturesClient> client)
 {
     RefCountedSupplement<Page, ContextFeatures>::provideTo(page, ContextFeatures::supplementName(), ContextFeatures::create(client));
 }
 
 void provideContextFeaturesToDocumentFrom(Document& document, Page& page)
 {
     ContextFeatures* provided = static_cast<ContextFeatures*>(RefCountedSupplement<Page, ContextFeatures>::from(page, ContextFeatures::supplementName()));
     if (!provided)
         return;
     document.setContextFeatures(*provided);
 }
 
 }