Adds ability to prevent browser connection updates in layout tests.

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 42 matching lines @@
 
         m_isOnLine = onLine;
     }
 
     Page::networkStateChanged(onLine);
 }
 
 void NetworkStateNotifier::setWebConnectionType(blink::WebConnectionType type)
 {
     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 26 matching lines @@
     size_t index = observers.find(observer);
     if (index != kNotFound) {
         observers[index] = 0;
         observerList->zeroedObservers.append(index);
     }
 
     if (!observerList->iterating && !observerList->zeroedObservers.isEmpty())
         collectZeroedObservers(observerList, context);
 }
 
+void NetworkStateNotifier::setTestUpdatesOnly(bool updatesOnly)
+{
+    ASSERT(isMainThread());
+    m_testUpdatesOnly = updatesOnly;
+}
+
+void NetworkStateNotifier::setWebConnectionTypeForTest(blink::WebConnectionType type)
+{
+    ASSERT(isMainThread());
+    ASSERT(m_testUpdatesOnly);
+    setWebConnectionTypeImpl(type);
+}
+
 void NetworkStateNotifier::notifyObserversOnContext(ExecutionContext* context, blink::WebConnectionType type)
 {
     ObserverList* observerList = lockAndFindObserverList(context);
 
     // The context could have been removed before the notification task got to run.
     if (!observerList)
         return;
 
     ASSERT(context->isContextThread());
 
@@ skipping 30 matching lines @@
 
     list->zeroedObservers.clear();
 
     if (list->observers.isEmpty()) {
         MutexLocker locker(m_mutex);
         m_observers.remove(context); // deletes list
     }
 }
 
 } // namespace WebCore