Roll third_party/depot_tools/ 68978076f..9949ab7a4 (26 commits; 8 trivial rolls)

https://chromium.googlesource.com/chromium/tools/depot_tools.git/+log/68978076fdb7..9949ab7a4b1c

Created with:
  roll-dep third_party/depot_tools

Tbr: tsepez@chromium.org
Change-Id: Ia8cfb6348345b50cbbf9e12dcecfe8b8bb605a71
Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/71772
Reviewed-by: Lei Zhang <thestig@chromium.org>
Commit-Queue: Lei Zhang <thestig@chromium.org>
diff --git a/DEPS b/DEPS
index 834284e..c5b83eb 100644
--- a/DEPS
+++ b/DEPS
@@ -60,7 +60,7 @@
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling depot_tools
   # and whatever else without interference from each other.
-  'depot_tools_revision': '68978076fdb7c01737d097fea0763f9745463b1d',
+  'depot_tools_revision': '9949ab7a4b1cb3c342b38129b4e0bfcfb2ef5749',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling freetype
   # and whatever else without interference from each other.