Use lsb_release in install-build-deps.sh to determine linux distro.

build/install-build-deps.sh

 #!/bin/bash -e
 
 # Copyright (c) 2012 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 # Script to install everything needed to build chromium (well, ideally, anyway)
 # See http://code.google.com/p/chromium/wiki/LinuxBuildInstructions
 # and http://code.google.com/p/chromium/wiki/LinuxBuild64Bit
 
@@ skipping 45 matching lines @@
   --no-prompt)              do_default=1
                             do_quietly="-qq --assume-yes"
     ;;
   --quick-check)            do_quick_check=1;;
   --unsupported)            do_unsupported=1;;
   *) usage;;
   esac
   shift
 done
 
-ubuntu_versions="12\.04|12\.10|13\.04|13\.10|14\.04"
-ubuntu_codenames="precise|quantal|raring|saucy|trusty"
-ubuntu_issue="Ubuntu ($ubuntu_versions|$ubuntu_codenames)"
-# GCEL is an Ubuntu-derived VM image used on Google Compute Engine; /etc/issue
-# doesn't contain a version number so just trust that the user knows what
-# they're doing.
-gcel_issue="^GCEL"
+# Check for lsb_release command in $PATH
+if ! which lsb_release > /dev/null; then
+  echo "ERROR: lsb_release not found in \$PATH" >&2
+  exit 1;
+fi
 
+lsb_release=$(lsb_release --codename --short)
+ubuntu_codenames="(precise|quantal|raring|saucy|trusty)"
 if [ 0 -eq "${do_unsupported-0}" ] && [ 0 -eq "${do_quick_check-0}" ] ; then
-  if ! egrep -q "($ubuntu_issue|$gcel_issue)" /etc/issue; then
+  if [[ ! $lsb_release =~ $ubuntu_codenames ]]; then
     echo "ERROR: Only Ubuntu 12.04 (precise) through 14.04 (trusty) are"\
         "currently supported" >&2
     exit 1
   fi
 
   if ! uname -m | egrep -q "i686|x86_64"; then
     echo "Only x86 architectures are currently supported" >&2
     exit
   fi
 fi
@@ skipping 150 matching lines @@
   echo "Including debugging symbols."
 else
   echo "Skipping debugging symbols."
   dbg_list=
 fi
 
 # When cross building for arm on 64-bit systems the host binaries
 # that are part of v8 need to be compiled with -m32 which means
 # that basic multilib support is needed.
 if file /sbin/init | grep -q 'ELF 64-bit'; then
-  # TODO(thestig): Use lsb_release rather than looking /etc/issue.
-  if ! egrep -q "trusty" /etc/issue; then
+  if [ "$lsb_release" = "trusty" ]; then
     # gcc-multilib conflicts with the arm cross compiler in trusty but
     # g++-4.8-multilib gives us the 32-bit support that we need.
     arm_list="$arm_list g++-4.8-multilib"
   else
     arm_list="$arm_list g++-multilib"
   fi
 fi
 
 if test "$do_inst_arm" = "1" ; then
   echo "Including ARM cross toolchain."
@@ skipping 319 matching lines @@
              sed -e 's/[.]so[.][0-9].*/.so/' |
              sort -u); do
     [ "x${i##*/}" = "xld-linux.so" ] && continue
     [ -r "$i" ] && continue
     j="$(ls "$i."* | sed -e 's/.*[.]so[.]\([^.]*\)$/\1/;t;d' |
          sort -n | tail -n 1)"
     [ -r "$i.$j" ] || continue
     sudo ln -s "${i##*/}.$j" "$i"
   done
 fi