[Cronet] add script to symbolicate stack traces

Change-Id: I6127ef918487ba441a5b7f2b86d83d609aa83ad2
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1574378Reviewed-by: Misha Efimov <mef@chromium.org>
Commit-Queue: Paul Jensen <pauljensen@chromium.org>
Cr-Commit-Position: refs/heads/master@{#652541}

components/cronet/tools/symbolicate.sh

+#!/bin/bash
+# Copyright (c) 2019 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.
+
+set -e
+CHROME_SRC="$(dirname "$0")/../../.."
+
+if [ $# -lt 1 ] ; then
+  echo "Usage: "$0" [--debug-libs] stack-trace-file"
+  echo "   --debug-libs uses Debug (rather than Release) libraries."
+  exit 1
+fi
+
+LIB_TYPE=Release
+if [[ "$1" == "--debug-libs" ]] ; then
+  LIB_TYPE=Debug
+  shift
+fi
+
+if [ ! -f "$1" ] ; then
+  echo "$1: file not found"
+  exit 1
+fi
+
+# try to automatically identify architecture and version, if there are no user-
+# supplied values.
+if [ -z $ARCH ] ; then
+  if grep -q arm64 "$1" ; then
+    ARCH=arm64-v8a
+  elif grep -q armeabi-v7a "$1" ; then
+    ARCH=armeabi-v7a
+  elif grep -q armeabi "$1" ; then
+    ARCH=armeabi
+  elif grep -q "ABI: 'arm'" "$1" ; then
+    ARCH=armeabi-v7a
+  elif grep -q "ABI: 'arm64'" "$1" ; then
+    ARCH=arm64-v8a
+  elif grep -q "ABI: 'x86_64'" "$1" ; then
+    ARCH=x86_64
+  elif grep -q "ABI: 'x86'" "$1" ; then
+    ARCH=x86
+  else
+    echo "Cannot determine architecture."
+    echo "Set the ARCH environment variable explicitly to continue."
+    exit 1
+  fi
+fi
+if [ -z "$VERSION" ] ; then
+  VERSION=$(grep -o -m1 'libcronet\..*\.so' "$1" |
+            sed 's/libcronet\.\(.*\)\.so/\1/')
+fi
+
+echo VERSION=$VERSION
+echo ARCH=$ARCH
+echo Using symbolicator from: $CHROME_SRC
+echo
+
+ARCHOPT=
+if [[ "$ARCH" == "arm64-v8a" ]] ; then
+  ARCHOPT="--arch=arm64"
+fi
+
+FILE=${VERSION}/${LIB_TYPE}/cronet/symbols/${ARCH}/libcronet.${VERSION}.so
+GSUTIL="$CHROME_SRC/third_party/depot_tools/gsutil.py"
+$GSUTIL -m cp -R gs://chromium-cronet/android/${FILE} ~/Downloads
+
+TRACER="$CHROME_SRC/third_party/android_platform/development/scripts/stack"
+CHROMIUM_OUTPUT_DIR="$HOME/Downloads" "$TRACER" $ARCHOPT "$1"