Roll base/trace_event/common/ 640fc6dc8..521ac34eb (3 commits)

https://chromium.googlesource.com/chromium/src/base/trace_event/common.git/+log/640fc6dc86d5..521ac34ebd79

Created with:
  roll-dep base/trace_event/common

Change-Id: Ib01ab42ea5d5c1dc9f85798976d2e3498eba0a45
Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/98739
Commit-Queue: Nigi <nigi@chromium.org>
Reviewed-by: Nigi <nigi@chromium.org>
Auto-Submit: K. Moon <kmoon@chromium.org>
Commit-Queue: K. Moon <kmoon@chromium.org>
diff --git a/DEPS b/DEPS
index ecfe7d7..839e264 100644
--- a/DEPS
+++ b/DEPS
@@ -146,7 +146,7 @@
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling trace_event
   # and whatever else without interference from each other.
-  'trace_event_revision': '640fc6dc86d5e75e6c7e8006cb45fb46c91014e0',
+  'trace_event_revision': '521ac34ebd795939c7e16b37d9d3ddb40e8ed556',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling v8
   # and whatever else without interference from each other.