firefox/third_party/chromium/build/android/stacktrace/README.md

java_deobfuscate.py

A wrapper around ProGuard's ReTrace tool, which:

1. Updates the regular expression used to identify stack lines, and
2. Streams its output.

The second point here is what allows you to run:

adb logcat | build/android/stacktrace/java_deobfuscate.py out/Default/apks/ChromePublic.apk.mapping

And have it actually show output without logcat terminating.

Update Instructions:

ninja -C out/Release java_deobfuscate
cp out/Release/lib.java/build/android/stacktrace/java_deobfuscate.jar build/android/stacktrace

stackwalker.py

Extracts Breakpad microdumps from a log file and uses stackwalker to symbolize them.

crashpad_stackwalker.py

Fetches Crashpad dumps from a given device, walks and symbolizes the stacks.