devops: support Chromium mac compilation (#5202)

browser_patches/checkout_build_archive_upload.sh

@@ -66,6 +66,12 @@ elif [[ "$BUILD_FLAVOR" == "ffmpeg-cross-compile-win64" ]]; then
   EXPECTED_HOST_OS="Ubuntu"
   EXPECTED_HOST_OS_VERSION="20.04"
   BUILD_BLOB_NAME="ffmpeg-win64.zip"
+elif [[ "$BUILD_FLAVOR" == "chromium-mac" ]]; then
+  BROWSER_NAME="chromium"
+  EXTRA_BUILD_ARGS="--compile-mac"
+  EXPECTED_HOST_OS="Darwin"
+  EXPECTED_HOST_OS_VERSION="10.15"
+  BUILD_BLOB_NAME="chromium-mac.zip"
 elif [[ "$BUILD_FLAVOR" == "chromium-mac-arm64" ]]; then
   BROWSER_NAME="chromium"
   EXTRA_BUILD_ARGS="--compile-mac-arm64"

browser_patches/chromium/build.sh

@@ -58,6 +58,9 @@ compile_chromium() {
     fi
     CHROMIUM_FOLDER_NAME="chrome-mac"
     CHROMIUM_FILES_TO_ARCHIVE=("Chromium.app")
+  elif [[ $1 == "--compile-mac" ]]; then
+    CHROMIUM_FOLDER_NAME="chrome-mac"
+    CHROMIUM_FILES_TO_ARCHIVE=("Chromium.app")
   elif [[ $1 == "--compile-linux" ]]; then
     CHROMIUM_FOLDER_NAME="chrome-linux"
     CHROMIUM_FILES_TO_ARCHIVE=(