These are a few things that make life easier for Blink development

• analyze.R has R scripts for determining the likelihood that page cycler results are real regressions.

• blink-stuff.el has some Gnu Emacs hooks and functions for browsing and editing Blink source.

• completions has bash tab completion for layout tests names.

• init-chromium-env.sh sets up some git options for Chromium development.

• a11y has an Android accessibility agent that dumps accessibility events, useful for debugging the accessibility integration of web platform stuff.

• serving has some Go scripts that do reverse proxies and set no-caching headers, useful for debugging Service Workers.

The following are of historical interest only:

• idl-analyze.el is elisp for parsing WebKit IDL files. It has probably completely rotted.