Add a convenience typedef LazyInstance<T>::Leaky to avoid repeating T.

chrome/common/profiling.cc

 // Copyright (c) 2011 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.
 
 #include "chrome/common/profiling.h"
 
 #include "base/at_exit.h"
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/debug/profiler.h"
@@ skipping 71 matching lines @@
     thread_ = NULL;
   }
 
  private:
   base::Thread* thread_;
   base::Lock lock_;
 
   DISALLOW_COPY_AND_ASSIGN(ProfilingThreadControl);
 };
 
-base::LazyInstance<ProfilingThreadControl,
-                   base::LeakyLazyInstanceTraits<ProfilingThreadControl> >
+base::LazyInstance<ProfilingThreadControl>::Leaky
     g_flush_thread_control = LAZY_INSTANCE_INITIALIZER;
 
 } // namespace
 
 // static
 void Profiling::ProcessStarted() {
   const CommandLine& command_line = *CommandLine::ForCurrentProcess();
   std::string process_type =
       command_line.GetSwitchValueASCII(switches::kProcessType);
 
@@ skipping 28 matching lines @@
   return base::debug::BeingProfiled();
 }
 
 // static
 void Profiling::Toggle() {
   if (BeingProfiled())
     Stop();
   else
     Start();
 }