buildscripts: add config for building grpc-cronet artifact (#6134)

Author: voidzcy

buildscripts/kokoro/linux_artifacts.sh

@@ -10,7 +10,7 @@ readonly GRPC_JAVA_DIR="$(cd "$(dirname "$0")"/../.. && pwd)"
 "$GRPC_JAVA_DIR"/buildscripts/build_docker.sh
 "$GRPC_JAVA_DIR"/buildscripts/run_in_docker.sh /grpc-java/buildscripts/build_artifacts_in_docker.sh
 
-# grpc-android requires the Android SDK, so build outside of Docker and
+# grpc-android and grpc-cronet require the Android SDK, so build outside of Docker and
 # use --include-build for its grpc-core dependency
 echo y | ${ANDROID_HOME}/tools/bin/sdkmanager "build-tools;28.0.3"
 LOCAL_MVN_TEMP=$(mktemp -d)
@@ -22,6 +22,14 @@ pushd "$GRPC_JAVA_DIR/android"
  -PrepositoryDir="$LOCAL_MVN_TEMP"
 popd
 
+pushd "$GRPC_JAVA_DIR/cronet"
+../gradlew publish \
+ --include-build "$GRPC_JAVA_DIR" \
+ -Dorg.gradle.parallel=false \
+ -PskipCodegen=true \
+ -PrepositoryDir="$LOCAL_MVN_TEMP"
+popd
+
 readonly MVN_ARTIFACT_DIR="${MVN_ARTIFACT_DIR:-$GRPC_JAVA_DIR/mvn-artifacts}"
 mkdir -p "$MVN_ARTIFACT_DIR"
 cp -r "$LOCAL_MVN_TEMP"/* "$MVN_ARTIFACT_DIR"/

buildscripts/kokoro/upload_artifacts.sh

@@ -20,6 +20,9 @@ LOCAL_MVN_ARTIFACTS="$KOKORO_GFILE_DIR"/github/grpc-java/mvn-artifacts/
 # android artifact from linux job:
 [[ "$(find "$LOCAL_MVN_ARTIFACTS" -type f -iname 'grpc-android-*.aar' | wc -l)" != '0' ]]
 
+# cronet artifact from linux job:
+[[ "$(find "$LOCAL_MVN_ARTIFACTS" -type f -iname 'grpc-cronet-*.aar' | wc -l)" != '0' ]]
+
 # from linux job:
 [[ "$(find "$LOCAL_MVN_ARTIFACTS" -type f -iname 'protoc-gen-grpc-java-*-linux-x86_64.exe' | wc -l)" != '0' ]]
 [[ "$(find "$LOCAL_MVN_ARTIFACTS" -type f -iname 'protoc-gen-grpc-java-*-linux-x86_32.exe' | wc -l)" != '0' ]]