Added required BOARD environment variable when building chrome browser in sync_build_test.

sync_build_test.sh

 #!/bin/bash
 
 # Copyright (c) 2010 The Chromium OS 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 sync your checkout, build a Chromium OS image, and test it all
 # with one command.  Can also check out a new Chromium OS checkout and
 # perform a subset of the above operations.
 #
@@ skipping 524 matching lines @@
         ${jobs_param} ${withdev_param} ${build_autotest_param} \
         ${pkg_param}
 
     run_phase_in_chroot "Building unit tests" ./build_tests.sh ${board_param}
     if [[ "${FLAGS_board}" == "x86-generic" ]]; then
       run_phase_in_chroot "Running unit tests" ./run_tests.sh ${board_param}
     fi
   fi
 
   if [[ ${FLAGS_chrome_root} ]]; then
-      run_phase_in_chroot "Building Chromium browser" \
-        USE="build_tests" FEATURES="-usersandbox" \
-        CHROME_ORIGIN=LOCAL_SOURCE emerge-${FLAGS_board} chromeos-chrome
+    run_phase_in_chroot "Building Chromium browser" \
+      BOARD="${FLAGS_board}" USE="build_tests" FEATURES="-usersandbox" \
+      CHROME_ORIGIN=LOCAL_SOURCE emerge-${FLAGS_board} chromeos-chrome
   fi
 
   if [[ ${FLAGS_master} -eq ${FLAGS_TRUE} ]]; then
     chdir_relative src/scripts
     if [[ -n "${FLAGS_chronos_passwd}" ]]; then
       run_phase_in_chroot "Setting default chronos password" \
       ./enter_chroot.sh "echo '${FLAGS_chronos_passwd}' | \
                         ~/trunk/src/scripts/set_shared_user_password.sh"
     fi
     run_phase_in_chroot "Mastering image" ./build_image \
@@ skipping 29 matching lines @@
   fi
 
   trap - EXIT
   echo "Successfully used ${FLAGS_top} to:"
   describe_steps
   show_duration
 }
 
 
 main $@