Fix ChromeOS Swarming bot compile

platform_tools/chromeos/bin/chromeos_make

 #!/bin/bash
 
 # This script builds Skia for ChromeOS by mounting the Skia checkout inside a
 # chroot contained within an existing ChromeOS checkout, entering the chroot,
 # and running the build_skia_in_chroot script.
 
 SCRIPT_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
 
 if [ $(uname) != "Linux" ]; then
     echo "ERROR: Can only build for ChromeOS on Linux."
@@ skipping 45 matching lines @@
   pushd "${CHROMEOS_CHROOT}" > /dev/null
   tar -zxvf ${TARBALL}
   popd > /dev/null
   rm ${CHROMEOS_CHROOT}/${TARBALL}
 fi
 
 # Put a fake .gclient file in the toolchain directory so that the cros tool
 # thinks we're in a Chrome checkout.
 echo "Delete me!" > "${CHROMEOS_CHROOT}/.gclient"
 
+# We may also need a .git directory.
+GIT_DIR="${CHROMEOS_CHROOT}/src/third_party/chromite/.git"
+if ! [[ -d "${GIT_DIR}" ]]; then
+  mkdir -p ${GIT_DIR}
+fi
+
 # Where the Skia code will pretend to live inside the chroot.
 SKIA_TOP_DIR="${SCRIPT_DIR}/../../.."
 
 pushd ${CHROMEOS_CHROOT}
 cros chrome-sdk --nogoma --board ${deviceID} --debug -- /bin/sh -c "cd ${SKIA_TOP_DIR}; platform_tools/chromeos/bin/build_skia_in_chroot ${makeVars}"
 popd > /dev/null
 
 # Clean up
 rm ${CHROMEOS_CHROOT}/.gclient
 
 if [ -f .cros_build_successful ]; then
   rm -rf .cros_build_successful
   exit 0
 fi
 
 exit 1