Roll third_party/zlib/ 1337da531..bb293c33b (3 commits)

https://chromium.googlesource.com/chromium/src/third_party/zlib.git/+log/1337da5314a9..bb293c33b08c

$ git log 1337da531..bb293c33b --date=short --no-merges --format='%ad %ae %s'
2019-03-29 drubery Pass file_length to UpdateArchiveAnalyzer
2019-03-28 dcheng Update include paths for //base/hash/md5.h
2019-03-28 wnwen Android: Remove build/secondary

Created with:
  roll-dep third_party/zlib

BUG=chromium:947060
TBR=thakis@chromium.org

Change-Id: I9d957da6e35d4dd4edcecc5b2af2c76061aca8d4
Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/52735
Reviewed-by: Lei Zhang <thestig@chromium.org>
Commit-Queue: Lei Zhang <thestig@chromium.org>
diff --git a/DEPS b/DEPS
index aa6a434..509c2fa 100644
--- a/DEPS
+++ b/DEPS
@@ -33,7 +33,7 @@
   'trace_event_revision': '936ba8a963284a6b3737cf2f0474a7131073abee',
   'v8_revision': '93306f1d7b2c10824e1e8876e5b8a3ab37c42b96',
   'yasm_source_revision': '720b70524a4424b15fc57e82263568c8ba0496ad',
-  'zlib_revision': '1337da5314a9716c0653301cceeb835d17fd7ea4',
+  'zlib_revision': 'bb293c33b08c50896cc304d1d8050573628e5db8',
 }
 
 deps = {