feat(chromium): roll to r1248

[microsoft-playwright-automation]

Browser build: https://github.com/microsoft/playwright-browsers/commit/9c3d7d24ff6b4643eddf686419f190c1e3c84b1e. Build has full platform coverage - check that all tests pass there.

[github-actions]

Test results for "tests 1"

4 flaky

⚠️ [chromium-library] › library/video.spec.ts:725 › screencast › should capture full viewport on hidpi `@chromium-ubuntu-22.04-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`
⚠️ [playwright-test] › ui-mode-test-watch.spec.ts:145 › should watch all `@windows-latest-node22`

52559 passed, 1270 skipped

---

Merge workflow run.

[github-actions]

Test results for "MCP"

5 failed
❌ [firefox] › mcp/cli-core.spec.ts:43 › click button @mcp-windows-latest-firefox
❌ [firefox] › mcp/cli-core.spec.ts:394 › --raw on command without output @mcp-windows-latest-firefox
❌ [firefox] › mcp/cli-drag.spec.ts:19 › drag between elements @mcp-windows-latest-firefox
❌ [firefox] › mcp/cli-save-as.spec.ts:26 › screenshot @mcp-windows-latest-firefox
❌ [firefox] › mcp/cli-save-as.spec.ts:48 › screenshot --filename @mcp-windows-latest-firefox

8932 passed, 1489 skipped

---

Merge workflow run.

[github-actions]

Test results for "tests 2"

1 failed
❌ [firefox-library] › library/inspector/cli-codegen-aria.spec.ts:87 › should update aria snapshot highlight @firefox-macos-15-large

37 flaky

⚠️ [chromium-library] › library/chromium/chromium.spec.ts:373 › should produce network events, routing, and annotations for Service Worker `@chrome-ubuntu-22.04`
⚠️ [chromium-library] › library/browsercontext-user-agent.spec.ts:110 › should work for navigator.userAgentData and sec-ch-ua headers `@msedge-windows-latest`
⚠️ [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/connect-over-cdp.spec.ts:80 › should connect when an existing page has been discarded `@chromium-macos-14-xlarge`
⚠️ [chromium-library] › library/chromium/oopif.spec.ts:179 › should take screenshot `@chromium-macos-14-xlarge`
⚠️ [chromium-library] › library/trace-viewer.spec.ts:1934 › should not leak recorders `@chromium-macos-14-xlarge`
⚠️ [chromium-library] › library/video.spec.ts:521 › screencast › should capture static page in persistent context Radoslav Kirilov (@smoke) `@chromium-macos-14-xlarge`
⚠️ [chromium-library] › library/chromium/oopif.spec.ts:179 › should take screenshot `@chromium-macos-15-xlarge`
⚠️ [chromium-library] › library/video.spec.ts:762 › screencast › should work with video+trace `@chromium-macos-15-xlarge`
⚠️ [chromium-library] › library/chromium/chromium.spec.ts:179 › serviceWorker(), and fromServiceWorker() work `@chrome-windows-latest`
⚠️ [chromium-library] › library/chromium/chromium.spec.ts:213 › should intercept service worker requests (main and within) `@chrome-windows-latest`
⚠️ [chromium-library] › library/chromium/chromium.spec.ts:301 › should report intercepted service worker requests in HAR `@chrome-windows-latest`
⚠️ [chromium-library] › library/chromium/chromium.spec.ts:373 › should produce network events, routing, and annotations for Service Worker `@chrome-windows-latest`
⚠️ [chromium-library] › library/chromium/chromium.spec.ts:213 › should intercept service worker requests (main and within) `@chrome-beta-ubuntu-22.04`
⚠️ [chromium-library] › library/selector-generator.spec.ts:280 › selector generator › should not use generated id `@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:633 › selector generator › should generate exact role when necessary `@chrome-macos-latest`
⚠️ [chromium-library] › library/selector-generator.spec.ts:693 › selector generator › should generate noText: ignore aria-labelledby pointing inside the element `@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:202 › should not print context options method override in mstest if no options were passed `@firefox-macos-15-large`
⚠️ [firefox-library] › library/inspector/cli-codegen-csharp.spec.ts:208 › should print context options method override in xunit if options were passed `@firefox-macos-15-large`
⚠️ [firefox-library] › library/inspector/cli-codegen-csharp.spec.ts:245 › should print a valid basic program in mstest `@firefox-macos-15-large`
⚠️ [firefox-library] › library/inspector/cli-codegen-java.spec.ts:125 › should print a valid basic program in junit `@firefox-macos-15-large`
⚠️ [firefox-library] › library/inspector/cli-codegen-javascript.spec.ts:104 › should save the codegen output to a file if specified `@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/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`
⚠️ [webkit-library] › library/inspector/cli-codegen-csharp.spec.ts:28 › should print the correct imports and context options `@webkit-windows-latest`
⚠️ [webkit-library] › library/browsertype-connect.spec.ts:1171 › should filter local paths from unsafe launch options `@webkit-macos-15-xlarge`
⚠️ [webkit-library] › library/browsertype-connect.spec.ts:813 › launchServer › should upload a folder `@webkit-macos-15-large`
⚠️ [webkit-library] › library/browsertype-connect.spec.ts:258 › run-server › should send extra headers with connect request `@webkit-macos-15-large`

112974 passed, 4890 skipped

---

Merge workflow run.

[github-actions]

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

🟢 The failure is a confirmed pre-existing flake

The PR is clear. The Firefox/macOS failure has the same signature on the PR's exact base SHA, while this PR only rolls Chromium metadata and protocol definitions.

Details

Pre-existing flake

• [firefox-library] › library/inspector/cli-codegen-aria.spec.ts:87 › should update aria snapshot highlight — failed on base SHA 46c9a533 before this PR (run) with the same alternating outcomes: x-pw-highlight was either missing or resolved to two elements. Across 74 recent Firefox/macOS runs, it failed 40 times and passed 34 times, including several retry-rescued runs. The PR does not touch Firefox, the recorder, or this test.

_{Triaged by the Playwright bot - agent run}