Replace more ObserverList with base::ObserverList.

net/log/net_log.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef NET_LOG_NET_LOG_H_
 #define NET_LOG_NET_LOG_H_
 
 #include <string>
 
 #include "build/build_config.h"
@@ skipping 294 matching lines @@
 
   // Last assigned source ID.  Incremented to get the next one.
   base::subtle::Atomic32 last_id_;
 
   // |is_capturing_| will be 0 when there are no observers watching the NetLog,
   // 1 otherwise. Note that this is stored as an Atomic32 rather than a boolean
   // so it can be accessed without needing a lock.
   base::subtle::Atomic32 is_capturing_;
 
   // |lock_| must be acquired whenever reading or writing to this.
-  ObserverList<ThreadSafeObserver, true> observers_;
+  base::ObserverList<ThreadSafeObserver, true> observers_;
 
   DISALLOW_COPY_AND_ASSIGN(NetLog);
 };
 
 // Helper that binds a Source to a NetLog, and exposes convenience methods to
 // output log messages without needing to pass in the source.
 class NET_EXPORT BoundNetLog {
  public:
   BoundNetLog() : net_log_(NULL) {}
   ~BoundNetLog();
@@ skipping 63 matching lines @@
   NetLog::Source source_;
   NetLog* net_log_;
 
   // TODO(eroman): Temporary until crbug.com/467797 is solved.
   Liveness liveness_ = ALIVE;
 };
 
 }  // namespace net
 
 #endif  // NET_LOG_NET_LOG_H_