Roll third_party/zlib/ ddebad26c..f4f46747b (4 commits)

https://chromium.googlesource.com/chromium/src/third_party/zlib.git/+log/ddebad26cfad..f4f46747bd5c

Created with:
  roll-dep third_party/zlib

TBR=tsepez@chromium.org

Change-Id: I460be896489f78d5394169c4e4020a955dc14bd7
Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/62370
Reviewed-by: Lei Zhang <thestig@chromium.org>
Commit-Queue: Lei Zhang <thestig@chromium.org>
diff --git a/DEPS b/DEPS
index f39e2c6..bc56814 100644
--- a/DEPS
+++ b/DEPS
@@ -33,7 +33,7 @@
   'trace_event_revision': '5e4fce17a9d2439c44a7b57ceecef6df9287ec2f',
   'v8_revision': '9ddd0c4c1893034fb78a159143eb61fa761f33de',
   'yasm_source_revision': '720b70524a4424b15fc57e82263568c8ba0496ad',
-  'zlib_revision': 'ddebad26cfadeb4ecdfe3da8beb396a85cf90c91',
+  'zlib_revision': 'f4f46747bd5c68320126fea54d6993ae0b5c3edd',
 }
 
 deps = {