feat(firefox): roll to r1544

[microsoft-playwright-automation]

Browser build: https://github.com/microsoft/playwright-browsers/commit/50445f32fd98c5e19d1fdd3ee37b8e7af336bdda. Build has full platform coverage - check that all tests pass there.

References #42565.

[github-actions]

Test results for "tests 1"

6 flaky

⚠️ [chromium-library] › library/video.spec.ts:736 › screencast › should work with video+trace `@frozen-time-library-chromium-linux`
⚠️ [chromium-library] › library/video.spec.ts:736 › screencast › should work with video+trace `@chromium-ubuntu-22.04-arm-node20`
⚠️ [firefox-library] › library/browsercontext-cookies-third-party.spec.ts:257 › third party 'Partitioned;' cookies `@firefox-ubuntu-22.04-node20`
⚠️ [firefox-library] › library/browsercontext-cookies-third-party.spec.ts:470 › top level 'Partitioned;' cookie and same origin iframe `@firefox-ubuntu-22.04-node20`
⚠️ [firefox-page] › page/page-goto.spec.ts:90 › should work with Cross-Origin-Opener-Policy `@firefox-ubuntu-22.04-node20`
⚠️ [webkit-page] › page/page-leaks.spec.ts:85 › click should not leak `@webkit-ubuntu-22.04-node20`

51411 passed, 1240 skipped

---

Merge workflow run.

[github-actions]

Test results for "MCP"

3 failed
❌ [chrome] › mcp/annotate.spec.ts:269 › should start dashboard and annotate when no dashboard is running @mcp-windows-latest-chrome
❌ [firefox] › mcp/cli-core.spec.ts:77 › click with --modifiers @mcp-windows-latest-firefox
❌ [msedge] › mcp/annotate.spec.ts:417 › should cancel browser_annotate when the MCP client disconnects @mcp-windows-latest-msedge

8345 passed, 1376 skipped

---

Merge workflow run.

[github-actions]

🟢 No real failures — all three are pre-existing MCP flakes

Hi, I'm the Playwright bot and I took a look at the CI on this Firefox roll (r1544).

The "tests 1" report has 0 failures (6 flaky, all retried green). The only reds are 3 MCP tests, and every one of them fails on SHAs this roll can't be responsible for — two of them aren't even Firefox. The roll changes the Firefox binary only; nothing here points back to it. The PR is clear.

Details

Overall: this Firefox roll only bumps the Firefox browser build. Two of the three failures are on Chrome/Edge — outside anything the roll touches — and the one Firefox failure flakes on unrelated main pushes. No signal that the roll caused any of these.

Pre-existing flake / infra

• [chrome] › mcp/annotate.spec.ts:269 › should start dashboard and annotate when no dashboard is running — Chrome, so untouched by a Firefox roll. Bimodal in the results DB: 3 of 715 runs failed, and it also failed on the unrelated PR test: race between close() and navigation with RenderDocument #42251. Pre-existing flake.
• [msedge] › mcp/annotate.spec.ts:417 › should cancel browser_annotate when the MCP client disconnects — Edge, also untouched by a Firefox roll. 4 of 703 runs failed, including main-branch push builds and the unrelated PR chore(deps-dev): bump fast-uri from 3.1.3 to 3.1.7 #42516. Pre-existing flake.
• [firefox] › mcp/cli-core.spec.ts:77 › click with --modifiers — the only Firefox one, but it flakes independently of this roll: 3 of 709 runs failed, on two main push builds and unrelated PRs fix(mcp): validate Host and Origin on CDP relay WebSocket upgrades #42103, chore(recorder): render highlights via the shared element highlight #42253, fix(android): include the from point in the swipe path #42349. Disconnect/annotate and modifier-click MCP flows aren't affected by a browser binary bump. Pre-existing flake.

_{Triaged by the Playwright bot - agent run}

[github-actions]

Test results for "tests 2"

3 failed
❌ [chromium-library] › library/chromium/connect-over-cdp.spec.ts:101 › should connectOverCDP and manage downloads in default context @msedge-dev-windows-latest
❌ [chromium-library] › library/chromium/oopif.spec.ts:179 › should take screenshot @chromium-macos-15-xlarge
❌ [android-page] › page/page-click-scroll.spec.ts:160 › should scroll instantly on retry when scroll-behavior is smooth

30 flaky

⚠️ [chromium-library] › library/chromium/css-coverage.spec.ts:112 › should report stylesheets across navigations `@chromium-macos-15-large`
⚠️ [chromium-page] › page/page-add-init-script-callback.spec.ts:50 › should pass arguments to the callback `@chromium-macos-15-large`
⚠️ [chromium-library] › library/chromium/chromium.spec.ts:213 › should intercept service worker requests (main and within) `@chromium-macos-14-xlarge`
⚠️ [chromium-library] › library/chromium/connect-over-cdp.spec.ts:630 › should not reuse utility worlds between two clients `@chrome-windows-latest`
⚠️ [chromium-library] › library/inspector/cli-codegen-1.spec.ts:147 › cli codegen › should ignore programmatic events `@chrome-windows-latest`
⚠️ [chromium-library] › library/inspector/cli-codegen-2.spec.ts:89 › cli codegen › should not lead to an error if html gets clicked `@chrome-windows-latest`
⚠️ [chromium-library] › library/chromium/chromium.spec.ts:373 › should produce network events, routing, and annotations for Service Worker `@chrome-beta-ubuntu-22.04`
⚠️ [chromium-library] › library/chromium/chromium.spec.ts:213 › should intercept service worker requests (main and within) `@chrome-macos-latest`
⚠️ [chromium-library] › library/chromium/chromium.spec.ts:373 › should produce network events, routing, and annotations for Service Worker `@chrome-macos-latest`
⚠️ [chromium-library] › library/selector-generator.spec.ts:315 › selector generator › should chain text after parent `@chrome-macos-latest`
⚠️ [chromium-library] › library/selector-generator.spec.ts:412 › selector generator › should not use input[value] `@chrome-macos-latest`
⚠️ [chromium-library] › library/selector-generator.spec.ts:556 › selector generator › should generate title selector `@chrome-macos-latest`
⚠️ [chromium-library] › library/selector-generator.spec.ts:604 › selector generator › should prefer role other input[type] `@chrome-macos-latest`
⚠️ [chromium-library] › library/selector-generator.spec.ts:617 › selector generator › should generate exact title when necessary `@chrome-macos-latest`
⚠️ [firefox-library] › library/browsercontext-cookies-third-party.spec.ts:257 › third party 'Partitioned;' cookies `@tracing-firefox`
⚠️ [firefox-library] › library/browsercontext-cookies-third-party.spec.ts:470 › top level 'Partitioned;' cookie and same origin iframe `@tracing-firefox`
⚠️ [firefox-library] › library/browsercontext-cookies-third-party.spec.ts:257 › third party 'Partitioned;' cookies `@firefox-macos-15-large`
⚠️ [firefox-library] › library/browsercontext-cookies-third-party.spec.ts:470 › top level 'Partitioned;' cookie and same origin iframe `@firefox-macos-15-large`
⚠️ [firefox-library] › library/inspector/cli-codegen-csharp.spec.ts:208 › should print context options method override in mstest if options were passed `@firefox-macos-15-large`
⚠️ [firefox-library] › library/browsercontext-cookies-third-party.spec.ts:257 › third party 'Partitioned;' cookies `@firefox-windows-latest`
⚠️ [firefox-library] › library/browsercontext-cookies-third-party.spec.ts:470 › top level 'Partitioned;' cookie and same origin iframe `@firefox-windows-latest`
⚠️ [firefox-library] › library/debug-controller.spec.ts:350 › should highlight inside iframe `@firefox-windows-latest`
⚠️ [firefox-library] › library/signals.spec.ts:25 › should close the browser when the node process closes `@firefox-windows-latest`
⚠️ [firefox-library] › library/browsercontext-cookies-third-party.spec.ts:257 › third party 'Partitioned;' cookies `@firefox-macos-15-xlarge`
⚠️ [firefox-library] › library/browsercontext-cookies-third-party.spec.ts:470 › top level 'Partitioned;' cookie and same origin iframe `@firefox-macos-15-xlarge`
⚠️ [firefox-library] › library/defaultbrowsercontext-1.spec.ts:89 › should support viewport option `@firefox-macos-15-xlarge`
⚠️ [webkit-library] › library/trace-viewer.spec.ts:1987 › canvas disabled title `@webkit-macos-15-xlarge`
⚠️ [webkit-library] › library/tracing.spec.ts:533 › should produce screencast frames fit `@webkit-macos-15-xlarge`
⚠️ [webkit-page] › page/page-leaks.spec.ts:136 › expect should not leak `@webkit-macos-15-xlarge`
⚠️ [webkit-library] › library/trace-viewer.spec.ts:1915 › should not leak recorders `@webkit-macos-15-large`

110762 passed, 4725 skipped

---

Merge workflow run.

[github-actions]

🟢 No real failures from this roll — three pre-existing Chromium/Android issues

Hi, I'm the Playwright bot and I took a look at the CI on this Firefox roll (r1544).

This PR swaps the Firefox binary only — the diff is entirely browser_patches/firefox/* plus the Firefox revision in browsers.json. The three reds in the latest "tests 2" report are all Chromium/Android tests, and each one already fails on SHAs this roll can't be responsible for. Nothing here traces back to the roll. The PR is clear.

Details

Overall: a Firefox binary bump can't reach a Chromium CDP/OOPIF path or an Android click test. Every failure below is reproduced off this PR — on main push builds or long-running snapshot mismatches — so none of them is new signal from the roll.

Pre-existing flake / infra

• [chromium-library] › library/chromium/oopif.spec.ts:179 › should take screenshot — pre-existing snapshot mismatch on the macOS xlarge runners. Failed 16 of 1011 runs, every one on chromium-macos-14/15-xlarge, all with the same diff (8207 pixels (ratio 0.04) off screenshot-oopif.png), across unrelated main push builds from Aug 3 through Sep 8. Chromium-only, so a Firefox roll doesn't touch it.

• [android-page] › page/page-click-scroll.spec.ts:160 › should scroll instantly on retry when scroll-behavior is smooth — broken on main, not by this PR. All 3 of its runs in the DB fail with the same page.click: Timeout ... waiting for locator('button'), and two of them are main push builds — including 4302dbb9, this PR's own base commit. It's failing independently of the roll (Android runs on Chromium anyway): 🟥🟥🟥

• [chromium-library] › library/chromium/connect-over-cdp.spec.ts:101 › should connectOverCDP and manage downloads in default context — a lone 30s timeout on msedge-dev-windows-latest (1 of 1011 runs). Thin cross-run history, but this is an Edge/CDP download flow with a classic timeout signature — a Firefox binary roll can't affect it. One-off infra hiccup, not the roll.

_{Triaged by the Playwright bot - agent run}