Update install_build_deps.sh for Ubuntu Trusty.

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"
-ubuntu_codenames="precise|quantal|raring|saucy"
+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"
 
 if [ 0 -eq "${do_unsupported-0}" ] && [ 0 -eq "${do_quick_check-0}" ] ; then
   if ! egrep -q "($ubuntu_issue|$gcel_issue)" /etc/issue; then
-    echo "ERROR: Only Ubuntu 12.04 (precise) through 13.10 (saucy) are"\
+    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 44 matching lines @@
 # Debugging symbols for all of the run-time libraries
 dbg_list="libatk1.0-dbg libc6-dbg libcairo2-dbg libfontconfig1-dbg
           libglib2.0-0-dbg libgtk2.0-0-dbg libpango1.0-0-dbg libpcre3-dbg
           libpixman-1-0-dbg libsqlite3-0-dbg libx11-6-dbg libxau6-dbg
           libxcb1-dbg libxcomposite1-dbg libxcursor1-dbg libxdamage1-dbg
           libxdmcp6-dbg libxext6-dbg libxfixes3-dbg libxi6-dbg libxinerama1-dbg
           libxrandr2-dbg libxrender1-dbg libxtst6-dbg zlib1g-dbg
           libstdc++6-4.6-dbg"
 
 # arm cross toolchain packages needed to build chrome on armhf
-arm_list="libc6-armhf-cross libc6-dev-armhf-cross libgcc1-armhf-cross
-          libgomp1-armhf-cross linux-libc-dev-armhf-cross
-          libgcc1-dbg-armhf-cross libgomp1-dbg-armhf-cross
-          binutils-arm-linux-gnueabihf cpp-arm-linux-gnueabihf
-          gcc-arm-linux-gnueabihf g++-arm-linux-gnueabihf
-          libmudflap0-dbg-armhf-cross"
-
-# Old armel cross toolchain packages
-armel_list="libc6-armel-cross libc6-dev-armel-cross libgcc1-armel-cross
-            libgomp1-armel-cross linux-libc-dev-armel-cross
-            libgcc1-dbg-armel-cross libgomp1-dbg-armel-cross
-            binutils-arm-linux-gnueabi cpp-arm-linux-gnueabi
-            gcc-arm-linux-gnueabi g++-arm-linux-gnueabi
-            libmudflap0-dbg-armel-cross"
-
-# TODO(sbc): remove armel once the armhf transition is complete
-arm_list="$arm_list $armel_list"
+arm_list="libc6-dev-armhf-cross
+          linux-libc-dev-armhf-cross
+          g++-arm-linux-gnueabihf"
 
 # Packages to build standalone NaCl and all its toolchains.
 nacl_list="g++-mingw-w64-i686 libtinfo-dev:i386"
 
 # Some package names have changed over time
 if package_exists ttf-mscorefonts-installer; then
   dev_list="${dev_list} ttf-mscorefonts-installer"
 else
   dev_list="${dev_list} msttcorefonts"
 fi
@@ skipping 82 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
-  arm_list="$arm_list g++-multilib"
+  # TODO(thestig): Use lsb_release rather than looking /etc/issue.
+  if ! egrep -q "trusty" /etc/issue; then
+    # gcc-multilib conflicts with the arm cross compiler in trusty but
+    # g++-4.8-multilib gives us the 32-bit support that we need.
+    arm_list="$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."
 else
   echo "Skipping ARM cross toolchain."
   arm_list=
 fi
 
 if test "$do_inst_nacl" = "1"; then
@@ skipping 313 matching lines @@
              sed -e 's/[.]so[.][0-9].*/.so/' |
              sort -u); do
     [ "x${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