Roll Code Coverage from 907123f96f40 to 6b21d11a706b (1 revision)

https://chromium.googlesource.com/chromium/src/tools/code_coverage.git/+log/907123f96f40..6b21d11a706b

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/code-coverage-pdfium
Please CC pdfium-reviews+autoroller@googlegroups.com on the revert to ensure that a human
is aware of the problem.

To report a problem with the AutoRoller itself, please file a bug:
https://bugs.chromium.org/p/skia/issues/entry?template=Autoroller+Bug

Documentation for the AutoRoller is here:
https://skia.googlesource.com/buildbot/+doc/master/autoroll/README.md

Bug: None
Tbr: pdfium-reviews+autoroller@googlegroups.com
Change-Id: I4f16ba4ac49f59bc0b92d004f96e83621f9446dc
Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/76992
Reviewed-by: pdfium-autoroll <pdfium-autoroll@skia-public.iam.gserviceaccount.com>
Commit-Queue: pdfium-autoroll <pdfium-autoroll@skia-public.iam.gserviceaccount.com>
diff --git a/DEPS b/DEPS
index e9943ad..7bb1414 100644
--- a/DEPS
+++ b/DEPS
@@ -49,7 +49,7 @@
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling code_coverage
   # and whatever else without interference from each other.
-  'code_coverage_revision': '907123f96f406d6c4f3617544fc1368a095f2221',
+  'code_coverage_revision': '6b21d11a706baa083fcedb293b1ac4eded16d65a',
   # 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.