Roll tools/clang/ 42fbdfef1..f2e1fa017 (5 commits)

https://chromium.googlesource.com/chromium/src/tools/clang/+log/42fbdfef1ce2..f2e1fa017ad5

Created with:
  roll-dep tools/clang

Change-Id: I5266fa5c3ae54ad3cbe48d0acff25ed7e7b4cd42
Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/66714
Reviewed-by: Lei Zhang <thestig@chromium.org>
Commit-Queue: Hui Yingst <nigi@chromium.org>

DEPS

diff --git a/DEPS b/DEPS
index f267762..69f72c6 100644
--- a/DEPS
+++ b/DEPS
@@ -17,7 +17,7 @@
   'build_revision': '1bee638a8c4a9481ea06df4982d69488d0a5626d',
   'buildtools_revision': '1f38b432e5630619f3aba0a22b9b63d606aee35a',
   'catapult_revision': 'ea794b87a8c5a2439c21bfc38e36e74aa8c2c518',
-  'clang_revision': '42fbdfef1ce265b09dc6bda2ed90d83324c97481',
+  'clang_revision': 'f2e1fa017ad50fe5864e59c50d925add9b5b2c91',
   'code_coverage_revision': 'c7a868bacaccf4f52848e04564fb7de0671e0727',
   'depot_tools_revision': '816c2b3548fbb7c48a876484faac3e5f39c9416d',
   'freetype_revision': '8930cc96188c21a0ea5f7da7a6d00c4fefd86d3a',