Extract simpler classes for observing context lifecycle and observe Page lifecycle inNavigatorVibra…

Source/core/page/PageLifecycleObserver.cpp

Index: Source/core/page/PageLifecycleObserver.cpp
diff --git a/Source/core/dom/TransformSourceLibxslt.cpp b/Source/core/page/PageLifecycleObserver.cpp
similarity index 81%
copy from Source/core/dom/TransformSourceLibxslt.cpp
copy to Source/core/page/PageLifecycleObserver.cpp
index 6580a117a88754403fc4aada74a3778fe29d335d..444bb4ed22b69fa07506fc04ac500cac32792efd 100644
--- a/Source/core/dom/TransformSourceLibxslt.cpp
+++ b/Source/core/page/PageLifecycleObserver.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2009 Apple Inc. All rights reserved.
+ * Copyright (C) 2013 Google Inc. All Rights Reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
@@ -23,22 +23,22 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#include "config.h"
 
-#include "core/dom/TransformSource.h"
+#include "config.h"
+#include "core/page/PageLifecycleObserver.h"
 
-#include <libxml/tree.h>
+#include "core/page/Page.h"
 
 namespace WebCore {
 
-TransformSource::TransformSource(xmlDocPtr source)
-    : m_source(source)
+PageLifecycleObserver::PageLifecycleObserver(Page* page)
+    : LifecycleObserver(page)
 {
 }
 
-TransformSource::~TransformSource()
+PageLifecycleObserver::~PageLifecycleObserver()
 {
-    xmlFreeDoc(m_source);
+    observeContext(0, PageLifecycleObserverType);
 }
 
 } // namespace WebCore