trying this

chromium-76.0.3809.132-chromedriver-zlib-fix.patch

@@ -0,0 +1,11 @@
+diff -up chromium-76.0.3809.132/chrome/test/chromedriver/BUILD.gn.fixme chromium-76.0.3809.132/chrome/test/chromedriver/BUILD.gn
+--- chromium-76.0.3809.132/chrome/test/chromedriver/BUILD.gn.fixme	2019-09-10 15:53:02.871463568 -0400
++++ chromium-76.0.3809.132/chrome/test/chromedriver/BUILD.gn	2019-09-10 15:53:33.057824836 -0400
+@@ -197,6 +197,7 @@ source_set("automation_client_lib") {
+     "//services/network/public/cpp",
+     "//services/network/public/mojom",
+     "//third_party/blink/public:buildflags",
++    "//third_party/zlib",
+     "//third_party/zlib:minizip",
+     "//third_party/zlib/google:zip",
+     "//ui/accessibility:ax_enums_mojo",

chromium.spec

@@ -316,8 +316,9 @@ Patch204:	chromium-75.0.3770.80-vaapi-libva1-compatibility.patch
 # Pulseaudio changed the API a little in 12.99.1
 Patch205:	chromium-76.0.3809.100-pulse-api-change.patch
 
-# Apply this patches to work around EPEL8 issues
+# Apply these patches to work around EPEL8 issues
 Patch300:	chromium-76.0.3809.132-rhel8-force-disable-use_gnome_keyring.patch
+Patch301:	chromium-76.0.3809.132-chromedriver-zlib-fix.patch
 
 # Use chromium-latest.py to generate clean tarball from released build tarballs, found here:
 # http://build.chromium.org/buildbot/official/
@@ -896,6 +897,10 @@ udev.
 %patch300 -p1 -b .disblegnomekeyring
 %endif
 
+%if %{bundleminizip}
+%patch301 -p1 -b .chromedriver-zlib
+%endif
+
 # Change shebang in all relevant files in this directory and all subdirectories
 # See `man find` for how the `-exec command {} +` syntax works
 find -type f -exec sed -iE '1s=^#! */usr/bin/\(python\|env python\)[23]\?=#!%{__python2}=' {} +