Add binutils-aarch64-linux-gnu to support Linux ARM64 build.

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 https://chromium.googlesource.com/chromium/src/+/master/docs/linux_build_instructions.md
 
 usage() {
@@ skipping 206 matching lines @@
           gpg -a --export ${EM_ARCHIVE_KEY_FINGER} | sudo apt-key add -
           if ! grep "^${EM_REPO}" "${CROSSTOOLS_LIST}" &>/dev/null; then
             echo "${EM_SOURCE}" | sudo tee -a "${CROSSTOOLS_LIST}" >/dev/null
           fi
           arm_list+=" ${GPP_ARM_PACKAGE}"
         fi
       fi
     fi
     ;;
   *)
-    arm_list="libc6-dev-armhf-cross
+    arm_list="binutils-aarch64-linux-gnu
+              libc6-dev-armhf-cross
               linux-libc-dev-armhf-cross
               ${GPP_ARM_PACKAGE}"
     ;;
 esac
 
 # Work around for dependency issue Ubuntu/Trusty: http://crbug.com/435056
 case $lsb_release in
   trusty)
     arm_list+=" g++-4.8-multilib-arm-linux-gnueabihf
                 gcc-4.8-multilib-arm-linux-gnueabihf"
@@ skipping 314 matching lines @@
   if (echo "${OLD_LOCALE_GEN}" | cmp -s ${LOCALE_GEN}); then
     echo "Locales already up-to-date."
   else
     sudo locale-gen
   fi
 else
   for CHROMIUM_LOCALE in ${CHROMIUM_LOCALES}; do
     sudo locale-gen ${CHROMIUM_LOCALE}
   done
 fi