webui-lit-migration
Guide for migrating Chromium WebUI components from Polymer to Lit. Activate this skill if the user asks to migrate a file or component to Lit.
24.24k repo starsObserved in 2 repos
Development
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Browse reusable Agent Skills, each with a clear purpose and practical guidance.
accessibility-cleanup
Finds common violations of the Android accessibility API in the Clank App Java code and attempts to address them (e.g. hardcoded state change announcements, missing events, focus moving, assertive live regions, etc).
24.24k repo starsObserved in 1 repos
Development
analyzing-sql-traces
Extracts raw trace data from Perfetto traces, runs arbitrary SQL queries for custom follow-up analysis, and applies expert cognitive principles (Tiered Flow Analysis, Semantic Mismatch, Redundancy) to identify performance bottlenecks, structural redundancies, and tracer gaps. Use when you need to analyze a trace under a specific focus/entrypoint slice, identify uninstrumented 'black boxes', or execute arbitrary SQL queries on trace databases directly using SQLite/Perfetto SQL syntax, and generate a precise instrumentation breakdown plan or refactoring instructions for the Codebase Agent. Don't use for capture or compilation tasks.
24.24k repo starsObserved in 1 repos
Testing & Quality
android-test-batching
Guide for auditing and applying batching annotations (@Batch) and AutoReset rules (AutoResetCtaTransitTestRule) to Android javatests in Chromium. Use this skill when optimizing Java instrumentation test runtimes, resolving test state leaks, or migrating tests to batched execution.
24.24k repo starsObserved in 1 repos
Testing & Quality
apply-fix-from-crbug-with-diff
Automates applying a bug fix from a bug report containing a diff and CL description. Supports processing multiple bugs in parallel using subagents.
24.24k repo starsObserved in 1 repos
Development
browser-window-feature-refactor
Refactor Chrome desktop `Browser`-scoped logic, such as `Browser` and `BrowserWindow` methods and state, into encapsulated feature controllers owned by `BrowserWindowFeatures`.
24.24k repo starsObserved in 1 repos
Development
chromium-code-link-formatting
Use this skill when you need to link to files or specific lines in the Chromium codebase within a document intended for external sharing (e.g., Google Docs, Buganizer). This skill ensures links use the stable `source.chromium.org` format with line numbers and commit hashes for accessibility, even if the user doesn't explicitly specify the format. Do not use for internal or purely local notes where file:/// links are preferred.
24.24k repo starsObserved in 1 repos
Documents
experimental-ci-only-validator
Checks if a Chromium test suite is barred by `ci_only = True` configuration on coverage trybots, which prevents the test suite from running automatically on Gerrit CQ runs and can cause underreported code coverage.
24.24k repo starsObserved in 1 repos
DevOps & Security
experimental-code-coverage-build-inspector
Inspects LUCI build details using the inspect_coverage_build.py script to validate code coverage configurations, test execution, and target file coverage.
24.24k repo starsObserved in 1 repos
Testing & Quality
experimental-code-coverage-build-invoker
Triggers LUCI try jobs to generate code coverage data. Supports Mode 1 (standard git cl try for source CLs) and Mode 2 (led for custom builds).
24.24k repo starsObserved in 1 repos
DevOps & Security