Require explicit selection of traits for LazyInstance

content/browser/tracing/tracing_controller_impl.h

 // Copyright (c) 2013 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 CONTENT_BROWSER_TRACING_TRACING_CONTROLLER_IMPL_H_
 #define CONTENT_BROWSER_TRACING_TRACING_CONTROLLER_IMPL_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 85 matching lines @@
 
   class TraceMessageFilterObserver {
    public:
     virtual void OnTraceMessageFilterAdded(TraceMessageFilter* filter) = 0;
     virtual void OnTraceMessageFilterRemoved(TraceMessageFilter* filter) = 0;
   };
   void AddTraceMessageFilterObserver(TraceMessageFilterObserver* observer);
   void RemoveTraceMessageFilterObserver(TraceMessageFilterObserver* observer);
 
  private:
-  friend struct base::DefaultLazyInstanceTraits<TracingControllerImpl>;
+  friend struct base::LazyInstanceTraitsBase<TracingControllerImpl>;
   friend class TraceMessageFilter;
 
   // The arguments and callback for an queued global memory dump request.
   struct QueuedMemoryDumpRequest {
     QueuedMemoryDumpRequest(
         const base::trace_event::MemoryDumpRequestArgs& args,
         const base::trace_event::MemoryDumpCallback& callback);
     ~QueuedMemoryDumpRequest();
     const base::trace_event::MemoryDumpRequestArgs args;
     const base::trace_event::MemoryDumpCallback callback;
@@ skipping 125 matching lines @@
   scoped_refptr<TraceDataSink> trace_data_sink_;
   scoped_refptr<TraceDataSink> monitoring_data_sink_;
   std::unique_ptr<base::DictionaryValue> metadata_;
 
   DISALLOW_COPY_AND_ASSIGN(TracingControllerImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_TRACING_TRACING_CONTROLLER_IMPL_H_