test(firefox): add temporary webdriver benchmark workflow

[davidmurdoch]

Description

This is a temporary draft PR to run a focused Firefox buildWebDriver benchmark in CI against both main and codex/firefox-xpi-comment-metadata-spike from the same harness.

Changelog

CHANGELOG entry: null

Related issues

Fixes:

Manual testing steps

1. Open the Actions run for Firefox buildWebDriver benchmark (temp).
2. Confirm both matrix targets (main and candidate) complete.
3. Review the generated step summary and uploaded JSON artifacts.

Pre-merge author checklist

• I've followed MetaMask Contributor Docs and MetaMask Extension Coding Standards.
• I've completed the PR template to the best of my ability
• I’ve included tests if applicable
• I’ve documented my code using JSDoc format if applicable
• I’ve applied the right labels on the PR (see labeling guidelines). Not required for external contributors.

Pre-merge reviewer checklist

• I've manually tested the PR (e.g. pull and build branch, run the app, test code being changed).
• I confirm that this PR addresses all acceptance criteria described in the ticket it closes and includes the necessary testing evidence such as recordings and or screenshots.

[github-actions]

CLA Signature Action: All authors have signed the CLA. You may need to manually re-run the blocking PR check if it doesn't pass in a few minutes.

[metamaskbotv2]

Builds ready [8aaaa73]

• builds: chrome, firefox
• builds (beta): chrome, firefox
• builds (flask): chrome, firefox
• builds (test): chrome, firefox
• builds (test-flask): chrome, firefox
• webpack builds: chrome, firefox
• webpack builds (beta): chrome, firefox
• webpack builds (flask): chrome, firefox
• webpack builds (test): chrome, firefox
• webpack builds (test-flask): chrome, firefox
• bundle size: Bundle Size Stats
• interaction-benchmark: Interaction Stats
• storybook: Storybook
• typescript migration: Dashboard
• all artifacts
• bundle viz:

  • background: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11
  • common: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21
  • ui: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20
  • content-script: 0
  • offscreen: 0

⚡ Performance Benchmarks (Total: 🟢 17 pass · 🟡 1 warn · 🔴 0 fail)

Baseline (latest main): 5cc482e | Date: 6/24/58222 | Pipeline: 23917109056 | Baseline logs

Interaction Benchmarks

Benchmark	chrome-browserify
loadNewAccount	🟢 [Show logs]
confirmTx	🟢 [Show logs]
bridgeUserActions	🟢 [Show logs]

📈 Results compared to the previous 5 runs on main

• ↑ bridgeUserActions/bridge_load_asset_picker: +41%

Startup Benchmarks

Benchmark	chrome-browserify	chrome-webpack	firefox-browserify	firefox-webpack
startupStandardHome	🟢 [Show logs]	🟢 [Show logs]	🟢 [Show logs]	🟢 [Show logs]
startupPowerUserHome	🟡 uiStartup [Show logs]	🟢 [Show logs]	🟢 [Show logs]	🟢 [Show logs]

📈 Results compared to the previous 5 runs on main

• ↑ startupStandardHome/initialActions: +11%
• ↓ startupPowerUserHome/backgroundConnect: -21%
• ↑ startupPowerUserHome/numNetworkReqs: +20%
• ↓ startupStandardHome/firstPaint: -16%
• ↑ startupPowerUserHome/uiStartup: +13%
• ↓ startupPowerUserHome/domInteractive: -11%
• ↑ startupPowerUserHome/numNetworkReqs: +57%
• ↓ startupStandardHome/initialActions: -17%
• ↑ startupPowerUserHome/domInteractive: +10%
• ↓ startupPowerUserHome/backgroundConnect: -18%
• ↑ startupPowerUserHome/setupStore: +24%
• ↑ startupStandardHome/initialActions: +11%
• ↑ startupStandardHome/setupStore: +50%
• ↑ startupPowerUserHome/firstReactRender: +12%
• ↑ startupPowerUserHome/setupStore: +21%

User Journey Benchmarks

Benchmark	chrome-browserify
onboardingImportWallet	🟢 [Show logs]
onboardingNewWallet	🟢 [Show logs]
assetDetails	🟢 [Show logs]
solanaAssetDetails	🟢 [Show logs]
importSrpHome	🟢 [Show logs]
sendTransactions	🟢 [Show logs]
swap	🟢 [Show logs]

📈 Results compared to the previous 5 runs on main

• ↓ onboardingImportWallet/metricsToWalletReadyScreen: -17%
• ↓ onboardingImportWallet/doneButtonToHomeScreen: -75%
• ↑ onboardingImportWallet/openAccountMenuToAccountListLoaded: +55%
• ↓ onboardingImportWallet/total: -33%
• ↓ onboardingNewWallet/agreeButtonToOnboardingSuccess: -14%
• ↓ onboardingNewWallet/doneButtonToAssetList: -33%
• ↓ onboardingNewWallet/total: -27%
• ↓ assetDetails/assetClickToPriceChart: -69%
• ↓ assetDetails/total: -69%
• ↓ solanaAssetDetails/assetClickToPriceChart: -59%
• ↓ solanaAssetDetails/total: -59%
• ↑ importSrpHome/loginToHomeScreen: +13%
• ↓ importSrpHome/openAccountMenuAfterLogin: -14%
• ↓ importSrpHome/homeAfterImportWithNewWallet: -31%
• ↓ importSrpHome/total: -25%
• ↑ sendTransactions/openSendPageFromHome: +65%
• ↑ sendTransactions/reviewTransactionToConfirmationPage: +13%
• ↑ sendTransactions/total: +13%
• ↓ swap/openSwapPageFromHome: -82%
• ↑ swap/fetchAndDisplaySwapQuotes: +24%
• ↑ swap/total: +10%

🌐 Dapp Page Load Benchmarks

Current Commit: 8aaaa73 | Date: 4/2/2026

📄 Localhost MetaMask Test Dapp

Samples: 100

Summary

• pageLoadTime-> current mean value: 1.03s (±39ms) 🟡 | historical mean value: 1.02s ⬆️ (historical data)
• domContentLoaded-> current mean value: 711ms (±37ms) 🟢 | historical mean value: 717ms ⬇️ (historical data)
• firstContentfulPaint-> current mean value: 85ms (±11ms) 🟢 | historical mean value: 85ms ⬇️ (historical data)

📈 Detailed Results

Metric	Mean	Std Dev	Min	Max	P95	P99
pageLoadTime	1.03s	39ms	1.01s	1.31s	1.09s	1.31s
domContentLoaded	711ms	37ms	690ms	969ms	758ms	969ms
firstPaint	85ms	11ms	68ms	168ms	96ms	168ms
firstContentfulPaint	85ms	11ms	68ms	168ms	96ms	168ms
largestContentfulPaint	0ms	0ms	0ms	0ms	0ms	0ms

Bundle size diffs [🚨 Warning! Bundle size has increased!]

• background: 503 Bytes (0.01%)
• ui: -11.54 KiB (-0.14%)
• common: 15.67 KiB (0.12%)

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[metamaskbotv2]

Builds ready [41453f0]

• builds: chrome, firefox
• builds (beta): chrome, firefox
• builds (flask): chrome, firefox
• builds (test): chrome, firefox
• builds (test-flask): chrome, firefox
• webpack builds: chrome, firefox
• webpack builds (beta): chrome, firefox
• webpack builds (flask): chrome, firefox
• webpack builds (test): chrome, firefox
• webpack builds (test-flask): chrome, firefox
• bundle size: Bundle Size Stats
• interaction-benchmark: Interaction Stats
• storybook: Storybook
• typescript migration: Dashboard
• all artifacts
• bundle viz:

  • background: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11
  • common: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21
  • ui: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20
  • content-script: 0
  • offscreen: 0

⚡ Performance Benchmarks (Total: 🟢 18 pass · 🟡 0 warn · 🔴 0 fail)

Baseline (latest main): 5cc482e | Date: 6/24/58222 | Pipeline: 23918534050 | Baseline logs

Interaction Benchmarks

Benchmark	chrome-browserify
loadNewAccount	🟢 [Show logs]
confirmTx	🟢 [Show logs]
bridgeUserActions	🟢 [Show logs]

Startup Benchmarks

Benchmark	chrome-browserify	chrome-webpack	firefox-browserify	firefox-webpack
startupStandardHome	🟢 [Show logs]	🟢 [Show logs]	🟢 [Show logs]	🟢 [Show logs]
startupPowerUserHome	🟢 [Show logs]	🟢 [Show logs]	🟢 [Show logs]	🟢 [Show logs]

📈 Results compared to the previous 5 runs on main

• ↑ startupStandardHome/firstPaint: +12%
• ↓ startupStandardHome/initialActions: -44%
• ↑ startupPowerUserHome/domInteractive: +14%
• ↑ startupPowerUserHome/firstPaint: +12%
• ↑ startupPowerUserHome/numNetworkReqs: +58%
• ↑ startupStandardHome/initialActions: +67%
• ↑ startupPowerUserHome/setupStore: +39%
• ↓ startupStandardHome/initialActions: -44%
• ↓ startupStandardHome/setupStore: -42%
• ↓ startupPowerUserHome/domInteractive: -19%

User Journey Benchmarks

Benchmark	chrome-browserify
onboardingImportWallet	🟢 [Show logs]
onboardingNewWallet	🟢 [Show logs]
assetDetails	🟢 [Show logs]
solanaAssetDetails	🟢 [Show logs]
importSrpHome	🟢 [Show logs]
sendTransactions	🟢 [Show logs]
swap	🟢 [Show logs]

📈 Results compared to the previous 5 runs on main

• ↓ onboardingImportWallet/metricsToWalletReadyScreen: -32%
• ↓ onboardingImportWallet/doneButtonToHomeScreen: -74%
• ↑ onboardingImportWallet/openAccountMenuToAccountListLoaded: +55%
• ↓ onboardingImportWallet/total: -32%
• ↓ onboardingNewWallet/doneButtonToAssetList: -30%
• ↓ onboardingNewWallet/total: -24%
• ↓ assetDetails/assetClickToPriceChart: -58%
• ↓ assetDetails/total: -58%
• ↓ solanaAssetDetails/assetClickToPriceChart: -54%
• ↓ solanaAssetDetails/total: -54%
• ↓ importSrpHome/homeAfterImportWithNewWallet: -34%
• ↓ importSrpHome/total: -29%
• ↑ sendTransactions/openSendPageFromHome: +29%
• ↑ sendTransactions/selectTokenToSendFormLoaded: +18%
• ↑ sendTransactions/reviewTransactionToConfirmationPage: +15%
• ↑ sendTransactions/total: +15%
• ↓ swap/openSwapPageFromHome: -84%
• ↑ swap/fetchAndDisplaySwapQuotes: +24%
• ↑ swap/total: +10%

🌐 Dapp Page Load Benchmarks

Current Commit: 41453f0 | Date: 4/2/2026

📄 Localhost MetaMask Test Dapp

Samples: 100

Summary

• pageLoadTime-> current mean value: 1.07s (±41ms) 🟡 | historical mean value: 1.02s ⬆️ (historical data)
• domContentLoaded-> current mean value: 738ms (±38ms) 🟢 | historical mean value: 717ms ⬆️ (historical data)
• firstContentfulPaint-> current mean value: 88ms (±10ms) 🟢 | historical mean value: 85ms ⬆️ (historical data)

📈 Detailed Results

Metric	Mean	Std Dev	Min	Max	P95	P99
pageLoadTime	1.07s	41ms	1.03s	1.34s	1.13s	1.34s
domContentLoaded	738ms	38ms	704ms	1.00s	799ms	1.00s
firstPaint	88ms	10ms	72ms	168ms	104ms	168ms
firstContentfulPaint	88ms	10ms	72ms	168ms	104ms	168ms
largestContentfulPaint	0ms	0ms	0ms	0ms	0ms	0ms

Bundle size diffs [🚨 Warning! Bundle size has increased!]

• background: 503 Bytes (0.01%)
• ui: -11.54 KiB (-0.14%)
• common: 15.67 KiB (0.12%)