From 1f1ee36314e63ec67cdd63668304068817e1950d Mon Sep 17 00:00:00 2001
From: "microsoft-playwright-automation[bot]"
 <203992400+microsoft-playwright-automation[bot]@users.noreply.github.com>
Date: Thu, 30 Apr 2026 17:48:00 +0000
Subject: [PATCH] feat(firefox): roll to r1518

---
 packages/playwright-core/browsers.json                    | 2 +-
 packages/playwright-core/src/server/firefox/protocol.d.ts | 1 +
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/packages/playwright-core/browsers.json b/packages/playwright-core/browsers.json
index 56d4a2bbbc98c..3ac1c3e0b2e37 100644
--- a/packages/playwright-core/browsers.json
+++ b/packages/playwright-core/browsers.json
@@ -31,7 +31,7 @@
     },
     {
       "name": "firefox",
-      "revision": "1515",
+      "revision": "1518",
       "installByDefault": true,
       "browserVersion": "149.0",
       "title": "Firefox"
diff --git a/packages/playwright-core/src/server/firefox/protocol.d.ts b/packages/playwright-core/src/server/firefox/protocol.d.ts
index d0cbb465a52f6..6e0822b91e849 100644
--- a/packages/playwright-core/src/server/firefox/protocol.d.ts
+++ b/packages/playwright-core/src/server/firefox/protocol.d.ts
@@ -520,6 +520,7 @@ export namespace Protocol {
         width: number;
         height: number;
       }|null;
+      deviceScaleFactor?: number;
     };
     export type setViewportSizeReturnValue = void;
     export type setZoomParameters = {