feat(chromium): roll to r1243

[microsoft-playwright-automation]

Browser build: https://github.com/microsoft/playwright-browsers/commit/3ce7db28b3ea91b6eaec315d39e019c3b28ece90. Build has full platform coverage - check that all tests pass there.

[github-actions]

Test results for "tests 1"

2 flaky

⚠️ [chromium-library] › library/popup.spec.ts:260 › should not throw when click closes popup `@realtime-time-library-chromium-linux`
⚠️ [firefox-page] › page/page-event-request.spec.ts:181 › should return response body when Cross-Origin-Opener-Policy is set `@firefox-ubuntu-22.04-node20`

51294 passed, 1237 skipped

---

Merge workflow run.

[github-actions]

Test results for "MCP"

4 failed
❌ [chromium] › mcp/clipboard.spec.ts:19 › clipboard write without permission dialog @mcp-macos-latest-chromium
❌ [chromium] › mcp/clipboard.spec.ts:19 › clipboard write without permission dialog @mcp-windows-latest-chromium
❌ [chromium] › mcp/clipboard.spec.ts:19 › clipboard write without permission dialog @mcp-ubuntu-latest-chromium
❌ [firefox] › mcp/cli-core.spec.ts:70 › dblclick @mcp-windows-latest-firefox

8255 passed, 1361 skipped

---

Merge workflow run.

[github-actions]

Hi, I'm the Playwright bot and I took a first look at the CI failures here.

🔴 One failure looks caused by this roll

mcp/clipboard.spec.ts:19 fails on Chromium across all three OSes because r1243 changed clipboard read behaviour — navigator.clipboard.readText() now returns "" instead of the text just written. The Firefox dblclick failure is a pre-existing flake unrelated to a Chromium roll.

Details

This is a pure Chromium roll (browser version bumps + generated protocol.d.ts), so the only product behaviour it can move is Chromium's. That lines up exactly with what failed.

Caused by this PR

• [chromium] › mcp/clipboard.spec.ts:19 › clipboard write without permission dialog (mcp-ubuntu-latest / mcp-windows-latest / mcp-macos-latest) — the write succeeds but the follow-up read comes back empty:

  - "result": "\"Hello from Playwright!\""
  + "result": "\"\""
  

  Across the test-results DB this test has failed on exactly two occasions: this PR (r1243) and feat(chromium): roll to r1242 #42356 (r1242) — the previous Chromium roll — always on all three OSes. It passed the other 2181 chromium runs with zero failures. Same test, same signature, only ever red on a Chromium roll → this is a real behaviour change from r1243, not a flake. Worth checking whether the granted clipboard-read,clipboard-write permissions still take effect on the rolled Chromium.

Pre-existing flake / infra

• [firefox] › mcp/cli-core.spec.ts:70 › dblclick (mcp-windows-latest-firefox) — pre-existing flake, and on Firefox, which a Chromium roll can't touch. It has failed on its own across unrelated runs: feat(selectors): replace pierceFrames() with frameLocator() #42395, feat(reporter): add chrome://tracing reporter #42354, test(mcp): cover --sandbox at the config resolution level #42339 (timeout), feat(trace): add action screenshot and aria snapshot events #42167, and a push run on 2026-08-12 — 749 of 750 runs otherwise pass. Not this PR.

Nothing to triage

• The "tests 1" report shows only 2 flaky (retry-rescued) results and no failures.

_{Triaged by the Playwright bot - agent run}

[github-actions]

Test results for "tests 2"

31 flaky

⚠️ [chromium-library] › library/chromium/chromium.spec.ts:213 › should intercept service worker requests (main and within) `@chrome-ubuntu-22.04`
⚠️ [chromium-library] › library/chromium/chromium.spec.ts:213 › should intercept service worker requests (main and within) `@chromium-macos-15-large`
⚠️ [chromium-library] › library/trace-viewer.spec.ts:1893 › should not leak recorders `@chromium-macos-15-large`
⚠️ [chromium-library] › library/chromium/oopif.spec.ts:179 › should take screenshot `@chromium-macos-14-xlarge`
⚠️ [chromium-library] › library/trace-viewer.spec.ts:1893 › should not leak recorders `@chromium-macos-14-xlarge`
⚠️ [chromium-library] › library/chromium/chromium.spec.ts:179 › serviceWorker(), and fromServiceWorker() work `@chromium-macos-15-xlarge`
⚠️ [chromium-library] › library/chromium/oopif.spec.ts:179 › should take screenshot `@chromium-macos-15-xlarge`
⚠️ [chromium-library] › library/trace-viewer.spec.ts:1893 › should not leak recorders `@chromium-macos-15-xlarge`
⚠️ [chromium-library] › library/chromium/chromium.spec.ts:301 › should report intercepted service worker requests in HAR `@chrome-beta-ubuntu-22.04`
⚠️ [chromium-library] › library/chromium/chromium.spec.ts:179 › serviceWorker(), and fromServiceWorker() work `@chrome-macos-latest`
⚠️ [chromium-library] › library/chromium/chromium.spec.ts:301 › should report intercepted service worker requests in HAR `@chrome-macos-latest`
⚠️ [chromium-library] › library/chromium/chromium.spec.ts:436 › should produce network events, routing, and annotations for Service Worker (advanced) `@chrome-macos-latest`
⚠️ [chromium-library] › library/inspector/cli-codegen-2.spec.ts:105 › cli codegen › should upload a single file `@chrome-macos-latest`
⚠️ [chromium-library] › library/selector-generator.spec.ts:203 › selector generator › should use ordinal for identical nodes `@chrome-macos-latest`
⚠️ [chromium-library] › library/selector-generator.spec.ts:213 › selector generator › should use data-testid in strict errors `@chrome-macos-latest`
⚠️ [firefox-page] › page/page-emulate-media.spec.ts:144 › should keep reduced motion and color emulation after reload `@tracing-firefox`
⚠️ [firefox-page] › page/page-event-request.spec.ts:181 › should return response body when Cross-Origin-Opener-Policy is set `@tracing-firefox`
⚠️ [firefox-library] › library/browsercontext-reuse.spec.ts:412 › reuse connect › should update viewport and media `@firefox-macos-15-large`
⚠️ [firefox-library] › library/inspector/cli-codegen-aria.spec.ts:87 › should update aria snapshot highlight `@firefox-macos-15-large`
⚠️ [firefox-library] › library/browsercontext-fetch.spec.ts:708 › should add default headers `@firefox-windows-latest`
⚠️ [firefox-library] › library/defaultbrowsercontext-1.spec.ts:28 › context.cookies() should work Radoslav Kirilov (@smoke) `@firefox-windows-latest`
⚠️ [firefox-library] › library/proxy.spec.ts:29 › should use proxy Radoslav Kirilov (@smoke) `@firefox-windows-latest`
⚠️ [firefox-page] › page/page-event-request.spec.ts:181 › should return response body when Cross-Origin-Opener-Policy is set `@firefox-macos-15-xlarge`
⚠️ [webkit-library] › library/playwright-client.spec.ts:26 › should connect from a page and drive the same browser `@tracing-webkit`
⚠️ [webkit-library] › library/har.spec.ts:472 › should return receive time `@webkit-windows-latest`
⚠️ [webkit-library] › library/trace-viewer.spec.ts:121 › should show tracing.group in the action list with location `@webkit-macos-15-xlarge`
⚠️ [webkit-library] › library/trace-viewer.spec.ts:1673 › should highlight locator in iframe while typing `@webkit-macos-15-xlarge`
⚠️ [webkit-page] › page/page-screenshot.spec.ts:356 › page screenshot › should work for canvas `@webkit-macos-15-xlarge`
⚠️ [webkit-library] › library/capabilities.spec.ts:209 › make sure that XMLHttpRequest upload events are emitted correctly `@webkit-macos-15-large`
⚠️ [webkit-page] › page/page-set-input-files.spec.ts:38 › should upload a folder `@webkit-macos-15-large`
⚠️ [android-page] › page/page-autowaiting-no-hang.spec.ts:53 › calling window.open and window.close

110536 passed, 4705 skipped

---

Merge workflow run.