Rename WebCore namespace to blink in Platform

Source/platform/LifecycleObserver.h

 /*
  * Copyright (C) 2008 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:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 11 matching lines @@
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  *
  */
 
 #ifndef LifecycleObserver_h
 #define LifecycleObserver_h
 
 #include "wtf/Assertions.h"
 
-namespace WebCore {
+namespace blink {
 
 template<typename T>
 class LifecycleObserver {
 public:
     typedef T Context;
 
     enum Type {
         ActiveDOMObjectType,
         DocumentLifecycleObserverType,
         GenericType,
@@ skipping 38 matching lines @@
 {
     if (m_lifecycleContext)
         unobserverContext(m_lifecycleContext, this);
 
     m_lifecycleContext = context;
 
     if (m_lifecycleContext)
         observerContext(m_lifecycleContext, this);
 }
 
-} // namespace WebCore
+} // namespace blink
 
 #endif // LifecycleObserver_h