Import Cobalt 21.master.0.299983

Includes the following patches:
  https://cobalt-review.googlesource.com/c/cobalt/+/6030
    n1214.hwang@samsung.com
diff --git a/src/docker/linux/android/Dockerfile b/src/docker/linux/android/Dockerfile
index ad34732..fe82cef 100644
--- a/src/docker/linux/android/Dockerfile
+++ b/src/docker/linux/android/Dockerfile
@@ -31,4 +31,4 @@
                -validity 10000 \
     && echo "Generated Android Debug keystore.")) \
     && /code/cobalt/build/gyp_cobalt -v -C ${CONFIG} ${PLATFORM} \
-    && ninja -C ${OUTDIR}/${PLATFORM}_${CONFIG} ${TARGET:-cobalt_deploy}
+    && ninja -v -j ${NINJA_PARALLEL} -C ${OUTDIR}/${PLATFORM}_${CONFIG} ${TARGET:-cobalt_deploy}