Save Breakpad symbol files for main executable name variants

chrome/tools/build/mac/dump_product_syms

 #!/bin/bash
 
 # Copyright (c) 2011 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 script expects the following environment variables to be set.  Xcode
 # normally sets them:
 #
 # CONFIGURATION - Release or Debug; this script only operates when Release.
@@ skipping 29 matching lines @@
 BRAND_SCRIPT="${TOP}/build/branding_value.sh"
 SRC_APP_NAME=$("${BRAND_SCRIPT}" "${BUILD_BRANDING}" PRODUCT_FULLNAME)
 . "${TOP}/chrome/VERSION"
 
 BREAKPAD_DUMP_SYMS="${BUILT_PRODUCTS_DIR}/dump_syms"
 FULL_VERSION="${MAJOR}.${MINOR}.${BUILD}.${PATCH}"
 ARCH="i386"
 
 DSYM_TAR_PATH="${BUILT_PRODUCTS_DIR}/${SRC_APP_NAME}.dSYM.tar.bz2"
 
+# Starting with an already-dumped symbol file at ${original_sym_path},
+# transforms the MODULE line (which must be the first line) from referring to
+# ${original_stem} to refer to ${variant_stem}. The transformed symbol file
+# is written to a symbol file at the same location that a symbol file would
+# be written to if ${variant_name} were in the SRC_NAMES array below.
+#
+# If the transformed symbol file already appears more recent than
+# ${original_sym_path}, it is left alone.
+redump_syms_variant() {
+  local original_sym_path="${1}"
+  local original_stem="${2}"
+  local variant_stem="${3}"
+  local variant_name="${4}"
+
+  local variant_sym_name="${variant_name}-${FULL_VERSION}-${ARCH}.breakpad"
+  local variant_sym_path="${BUILT_PRODUCTS_DIR}/${variant_sym_name}"
+
+  if [[ "${original_sym_path}" -nt "${variant_sym_path}" ]]; then
+    local pattern="\
+1s/^(MODULE [^ ]+ [^ ]+ [0-9a-fA-F]{33}) ${original_stem}\$/\1 ${variant_stem}/"
+    sed -E -e "${pattern}" < "${original_sym_path}" > "${variant_sym_path}"
+  fi
+}
+
 declare -a DSYMS
 
 # Everything in SRC_NAMES is required. It's an error for any of these files
 # to be missing.
 SRC_NAMES=(
     "${SRC_APP_NAME}.app"
     "${SRC_APP_NAME} Framework.framework"
     "${SRC_APP_NAME} Helper.app"
     "crash_inspector"
     "crash_report_sender.app"
@@ skipping 19 matching lines @@
   DSYM_PATH="${BUILT_PRODUCTS_DIR}/${DSYM_NAME}"
   DWARF_PATH="${DSYM_PATH}/Contents/Resources/DWARF/${SRC_STEM}"
   BPAD_SYM_NAME="${SRC_NAME}-${FULL_VERSION}-${ARCH}.breakpad"
   BPAD_SYM_PATH="${BUILT_PRODUCTS_DIR}/${BPAD_SYM_NAME}"
 
   # Only run dump_syms if the file has changed since the last dump.
   if [ "${DWARF_PATH}" -nt "${BPAD_SYM_PATH}" ] ; then
     "${BREAKPAD_DUMP_SYMS}" -a "${ARCH}" "${DWARF_PATH}" > "${BPAD_SYM_PATH}"
   fi
 
+  # Some executables will show up with variant names. The Breakpad symbol
+  # server looks up modules based on a combination of the module name and
+  # identifier (UUID). Produce symbol files for these variant names so that
+  # the Breakpad symbol server will have something to return for stacks that
+  # travel through these modules.
+  case "${SRC_NAME}" in
+    "${SRC_APP_NAME}.app")
+      # Google Chrome Canary is produced during packaging.
+      redump_syms_variant "${BPAD_SYM_PATH}" "${SRC_STEM}" \
+                          "${SRC_STEM} Canary" "${SRC_STEM} Canary.app"
+      ;;
+
+    "${SRC_APP_NAME} Helper.app")
+      # Google Chrome Helper EH and Google Chrome Helper NP are produced by
+      # chrome/tools/build/mac/make_more_helpers.sh.
+      redump_syms_variant "${BPAD_SYM_PATH}" "${SRC_STEM}" \
+                          "${SRC_STEM} EH" "${SRC_STEM} EH.app"
+      redump_syms_variant "${BPAD_SYM_PATH}" "${SRC_STEM}" \
+                          "${SRC_STEM} NP" "${SRC_STEM} NP.app"
+      ;;
+  esac
+
   # Remove the .dSYM archive if the file has changed since the archive was
   # last generated.  This will cause a new .dSYM archive to be created.
   if [ "${DWARF_PATH}" -nt "${DSYM_TAR_PATH}" ] ; then
     rm -f "${DSYM_TAR_PATH}"
   fi
 
   # Push the .dSYM bundle onto the DSYMS array so that it will be included in
   # the .dSYM archive if a new one is needed
   DSYMS[${#DSYMS[@]}]="${DSYM_NAME}"
 done
 
 # Create the archive of .dSYM bundles.
 if [ ! -e "${DSYM_TAR_PATH}" ] ; then
   # Change directory so that absolute paths aren't included in the archive.
   (cd "${BUILT_PRODUCTS_DIR}" &&
    tar -jcf "${DSYM_TAR_PATH}" "${DSYMS[@]}")
 fi