Adds NetInfo v3 Web API to Blink.

Source/core/page/NetworkStateNotifier.cpp

 /*
  * 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 51 matching lines @@
     ASSERT(isMainThread());
     if (m_testUpdatesOnly)
         return;
 
     setWebConnectionTypeImpl(type);
 }
 
 void NetworkStateNotifier::setWebConnectionTypeImpl(blink::WebConnectionType type)
 {
     ASSERT(isMainThread());
-    ASSERT(!m_testUpdatesOnly);
 
     MutexLocker locker(m_mutex);
     if (m_type == type)
         return;
     m_type = type;
 
     for (ObserverListMap::iterator it = m_observers.begin(); it != m_observers.end(); ++it) {
         ExecutionContext* context = it->key;
         context->postTask(bind(&NetworkStateNotifier::notifyObserversOnContext, this, context, type));
     }
@@ skipping 89 matching lines @@
 
     list->zeroedObservers.clear();
 
     if (list->observers.isEmpty()) {
         MutexLocker locker(m_mutex);
         m_observers.remove(context); // deletes list
     }
 }
 
 } // namespace WebCore