[chrome-devtools-frontend] Check error codes from curl and gsutil

gce/uploader_iteration.sh

 #!/bin/bash
 # Copyright (c) 2013 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.
 
 # This enables bash to treat any unhandled non-zero exit codes as "exceptions"
 set -e
 source $(dirname $0)/uploader_exit_codes.sh
 
 mark_step() {
   echo "$*"
   echo '====================='
 }
 
 SCRIPT_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
 
 mark_step 'Moving to the source code directory'
 SOURCE_DIR=/uploader/src
 cd "$SOURCE_DIR"
 
 mark_step 'Updating gyp'
 pushd gyp
-CHROMIUM_GYP_REVISION="$(curl -s http://src.chromium.org/chrome/trunk/src/DEPS | $SCRIPT_DIR/uploader_helper.py --find_project_revision='src/tools/gyp')"
+CHROMIUM_DEPS=$(curl -fsS http://src.chromium.org/chrome/trunk/src/DEPS) || exit $EXIT_GYP_UPDATE
+CHROMIUM_GYP_REVISION="$(echo "$CHROMIUM_DEPS" | $SCRIPT_DIR/uploader_helper.py --find_project_revision='src/tools/gyp')"
 svn cleanup || exit $EXIT_GYP_UPDATE
 svn up -r $CHROMIUM_GYP_REVISION || exit $EXIT_GYP_UPDATE
 popd
 
 mark_step 'Getting the last Blink revision for which the frontend has been uploaded'
 GS_PATH=gs://chrome-devtools-frontend
 KNOWN_REVISIONS_DIR="$GS_PATH/revs"
-LAST_BLINK_REVISION=$(gsutil ls "$KNOWN_REVISIONS_DIR" | sed -e "s#^$KNOWN_REVISIONS_DIR/@##" | sort -nr | head -n 1)
+ALL_UPLOADED_REVS=$(gsutil ls "$KNOWN_REVISIONS_DIR") || exit $EXIT_LAST_UPLOADED_BLINK_REV
+LAST_BLINK_REVISION=$(echo "$ALL_UPLOADED_REVS" | sed -e "s#^$KNOWN_REVISIONS_DIR/@##" | sort -nr | head -n 1)
 if [ -z "$LAST_BLINK_REVISION" ]; then
     exit $EXIT_LAST_UPLOADED_BLINK_REV
 fi
 echo "Last uploaded was for Blink revision $LAST_BLINK_REVISION"
 
 mark_step 'Getting Blink revisions blacklist'
 BLINK_REVISIONS_BLACKLIST_FILE=$GS_PATH/blink_revisions_blacklist
 BLINK_REVISIONS_BLACKLIST=""
 if gsutil ls "$BLINK_REVISIONS_BLACKLIST_FILE"; then
     BLINK_REVISIONS_BLACKLIST=$(gsutil cat "$BLINK_REVISIONS_BLACKLIST_FILE")
@@ skipping 74 matching lines @@
 
     zip -9r $ZIP_FILE * || exit $EXIT_ZIP_FRONTEND
     popd
 
     ZIP_SHA1=$(sha1sum $ZIP_FILE | awk '{print $1}')
     mv $ZIP_FILE "$ZIPS_DIR/$ZIP_SHA1.zip"
     echo "$ZIP_SHA1" > "$REVS_DIR/@$REVISION"
 
     gsutil -m cp -R $LOCAL_STORAGE_DIR/* $GS_PATH || exit $EXIT_CS_UPLOAD
 done