profiler: cleanup unused alternate_timer code
crrev.com/1632253002 removed the only client of alternate_timer.h
This CL removes the unreachable paths in the profiler code which
were there just to support alternate_timer (concretelly TCMALLOC).
BUG=564618
Review URL: https://codereview.chromium.org/1640223002
Cr-Original-Commit-Position: refs/heads/master@{#373286}
Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: bc5681f5a8d1db9c8a9d654531e1008b6065dbdd
diff --git a/tools/gn/bootstrap/bootstrap.py b/tools/gn/bootstrap/bootstrap.py
index ddabe31..2f5e995 100755
--- a/tools/gn/bootstrap/bootstrap.py
+++ b/tools/gn/bootstrap/bootstrap.py
@@ -214,7 +214,6 @@
'base/process/kill.cc',
'base/process/process_iterator.cc',
'base/process/process_metrics.cc',
- 'base/profiler/alternate_timer.cc',
'base/profiler/tracked_time.cc',
'base/run_loop.cc',
'base/sequence_checker_impl.cc',
