Sysroot: Add build_and_upload.py

build/linux/sysroot_scripts/sysroot-creator-precise.sh

Index: build/linux/sysroot_scripts/sysroot-creator-precise.sh
diff --git a/build/linux/sysroot_scripts/sysroot-creator-precise.sh b/build/linux/sysroot_scripts/sysroot-creator-precise.sh
index 0556b595a226fa4ceedb0eef697cf0089e27abf1..4aab5db389c229f427c5ba6487dd8b6d34316341 100755
--- a/build/linux/sysroot_scripts/sysroot-creator-precise.sh
+++ b/build/linux/sysroot_scripts/sysroot-creator-precise.sh
@@ -3,7 +3,7 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
-SCRIPT_DIR=$(dirname $0)
+SCRIPT_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
 
 DISTRO=ubuntu
 DIST=precise
@@ -16,8 +16,10 @@ APT_REPO_ARM64=http://ports.ubuntu.com
 KEYRING_FILE=/usr/share/keyrings/ubuntu-archive-keyring.gpg
 
 HAS_ARCH_AMD64=1
-HAS_ARCH_I386=1
-HAS_ARCH_ARM=1
+
+# Precise supports these architectures but they are not needed by chrome.
+# HAS_ARCH_I386=1
+# HAS_ARCH_ARM=1
 
 # Sysroot packages: these are the packages needed to build chrome.
 # NOTE: When DEBIAN_PACKAGES is modified, the packagelist files must be updated
@@ -202,4 +204,4 @@ DEBIAN_PACKAGES="\
 DEBIAN_PACKAGES_X86="libquadmath0"
 DEBIAN_PACKAGES_ARM="libdrm-omap1"
 
-. ${SCRIPT_DIR}/sysroot-creator.sh
+. "${SCRIPT_DIR}/sysroot-creator.sh"