profiler: cleanup unused alternate_timer code

base/base.gypi

 # 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.
 
 {
   'includes': [
     'trace_event/trace_event.gypi',
   ],
   'target_defaults': {
     'variables': {
@@ skipping 502 matching lines @@
           'process/process_metrics_freebsd.cc',
           'process/process_metrics_ios.cc',
           'process/process_metrics_linux.cc',
           'process/process_metrics_mac.cc',
           'process/process_metrics_nacl.cc',
           'process/process_metrics_openbsd.cc',
           'process/process_metrics_posix.cc',
           'process/process_metrics_win.cc',
           'process/process_posix.cc',
           'process/process_win.cc',
-          'profiler/alternate_timer.cc',
-          'profiler/alternate_timer.h',
           'profiler/native_stack_sampler.cc',
           'profiler/native_stack_sampler.h',
           'profiler/native_stack_sampler_posix.cc',
           'profiler/native_stack_sampler_win.cc',
           'profiler/scoped_profile.cc',
           'profiler/scoped_profile.h',
           'profiler/scoped_tracker.cc',
           'profiler/scoped_tracker.h',
           'profiler/stack_sampling_profiler.cc',
           'profiler/stack_sampling_profiler.h',
@@ skipping 522 matching lines @@
           'i18n/time_formatting.h',
           'i18n/timezone.cc',
           'i18n/timezone.h',
           'i18n/utf8_validator_tables.cc',
           'i18n/utf8_validator_tables.h',
         ],
       }]
     ],
   },
 }