Roll build and tools/clang to upgrade to Clang 15.

https://chromium.googlesource.com/chromium/src/build.git/+log/32ea04933645..a219ac203093

https://chromium.googlesource.com/chromium/src/tools/clang/+log/a8ca8222301c..3a67a5003bc5

Roll clang llvmorg-14-init-17086-g38e16e1c-4:llvmorg-15-init-1995-g5bec1ea7-1

Change-Id: I7a279acce7f5120e132673f0617b1f3a959cf5b1
Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/91117
Reviewed-by: Nigi <nigi@chromium.org>
Commit-Queue: Lei Zhang <thestig@chromium.org>
diff --git a/DEPS b/DEPS
index eaf0b3a..b9894fe 100644
--- a/DEPS
+++ b/DEPS
@@ -37,7 +37,7 @@
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling build
   # and whatever else without interference from each other.
-  'build_revision': '32ea04933645ad5985a48dab4f56796484e82064',
+  'build_revision': 'a219ac203093a5337cb1025860495a7a8f6d5c51',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling buildtools
   # and whatever else without interference from each other.
@@ -53,7 +53,7 @@
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling clang
   # and whatever else without interference from each other.
-  'clang_revision': 'a8ca8222301c8133135774b395955504c3313319',
+  'clang_revision': '3a67a5003bc582d62effd4dce12166a1260228f2',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling clang_dsymutil
   # and whatever else without interference from each other.