Remove memory peak detection code.

This CL removes dead code. It has no intended behavior change.

Change-Id: I5f5cabb2e162da82777a168df191c14fd0f9a295
Bug: 847876
TBR: dpranke@chromium.org
Reviewed-on: https://chromium-review.googlesource.com/1076506
Commit-Queue: Erik Chen <erikchen@chromium.org>
Reviewed-by: Daniel Cheng <dcheng@chromium.org>
Reviewed-by: Siddhartha S <ssid@chromium.org>
Cr-Original-Commit-Position: refs/heads/master@{#562836}
Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: 6b9b0c9cc512ffe6b6dad9f37f32186a44756cb5

tools/gn/bootstrap/bootstrap.py

diff --git a/tools/gn/bootstrap/bootstrap.py b/tools/gn/bootstrap/bootstrap.py
index 300abac..7ae06c3 100755
--- a/tools/gn/bootstrap/bootstrap.py
+++ b/tools/gn/bootstrap/bootstrap.py
@@ -646,7 +646,6 @@
       'base/trace_event/memory_dump_request_args.cc',
       'base/trace_event/memory_dump_scheduler.cc',
       'base/trace_event/memory_infra_background_whitelist.cc',
-      'base/trace_event/memory_peak_detector.cc',
       'base/trace_event/memory_usage_estimator.cc',
       'base/trace_event/process_memory_dump.cc',
       'base/trace_event/trace_buffer.cc',