Remove duplication in chromiumos-build invocation

src/scripts/build_platform_packages.sh

 #!/bin/bash
 
 # Copyright (c) 2009 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.
 
 # Load common constants.  This should be the first executable line.
 # The path to common.sh should be relative to your script's location.
 . "$(dirname "$0")/common.sh"
 
+verbose() {
+  echo "$@"
+  "$@"
+}
+
 assert_inside_chroot
 assert_not_root_user
 
 # Flags
 DEFINE_boolean stable $FLAGS_FALSE "Build with stable version of browser."
 DEFINE_boolean new_build $FLAGS_FALSE "Use chromiumos-build."
 DEFINE_string architecture i386 "The architecture to build for (--new_build only)." a
 
 # Fix up the command line and parse with shflags.
 FIXED_FLAGS="$@"
@@ skipping 29 matching lines @@
   # Passed to copy_chrome_zip.sh to get stable version of the browser
   export GET_STABLE_CHROME=1
 fi
 
 if [ $FLAGS_new_build -eq $FLAGS_TRUE ]; then
   # chromiumos-build works out the build order for itself.
   PACKAGES='dh-chromeos libchrome libchromeos'
   for PKG in $PLATFORM_DIRS $THIRD_PARTY_PACKAGES; do
     PACKAGES="$PACKAGES ${PKG%/*}"
   done
-  echo chromiumos-build -a "$FLAGS_architecture" --apt-source $PACKAGES
-  chromiumos-build -a "$FLAGS_architecture" --apt-source $PACKAGES
+  verbose chromiumos-build -a "$FLAGS_architecture" --apt-source $PACKAGES
 else
   # Build dh-chromeos really first. Some of third_party needs it.
   echo "Building package dh-chromeos..."
   cd "$PLATFORM_DIR/dh-chromeos"
   ./make_pkg.sh
   cd -
 
   # Build third_party packages first, since packages and libs depend on them.
   for i in $THIRD_PARTY_PACKAGES
   do
@@ skipping 19 matching lines @@
   for i in $PLATFORM_DIRS
   do
     echo "Building package ${i}..."
     cd "$PLATFORM_DIR/$i"
     ./make_pkg.sh
     cd -
   done
 fi
 
 echo "All packages built."