chrome://profiler infrastructure uses base time types.

base/profiler/scoped_profile.h

 // 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.
 
 
 #ifndef BASE_PROFILER_SCOPED_PROFILE_H_
 #define BASE_PROFILER_SCOPED_PROFILE_H_
 
 //------------------------------------------------------------------------------
 // ScopedProfile provides basic helper functions for profiling a short
 // region of code within a scope.  It is separate from the related ThreadData
 // class so that it can be included without much other cruft, and provide the
 // macros listed below.
 
 #include "base/base_export.h"
 #include "base/location.h"
 #include "base/macros.h"
-#include "base/profiler/tracked_time.h"
 #include "base/trace_event/heap_profiler.h"
 #include "base/tracked_objects.h"
 
 // Two level indirection is required for correct macro substitution.
 #define PASTE_COUNTER_ON_NAME2(name, counter) name##counter
 #define PASTE_COUNTER_ON_NAME(name, counter) \
   PASTE_COUNTER_ON_NAME2(name, counter)
 
 #define COUNTER_BASED_VARIABLE_NAME_FOR_PROFILING \
   PASTE_COUNTER_ON_NAME(some_profiler_variable_, __COUNTER__)
@@ skipping 38 matching lines @@
  private:
   Births* birth_;  // Place in code where tracking started.
   TaskStopwatch stopwatch_;
 
   DISALLOW_COPY_AND_ASSIGN(ScopedProfile);
 };
 
 }  // namespace tracked_objects
 
 #endif  // BASE_PROFILER_SCOPED_PROFILE_H_