web-feature: Resize observer

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The ResizeObserver API observes and reacts to changes in the size of DOM elements.

WKWebView

macOS

*

iOS

*

Android WebView

Android

*

WebView2

Windows

*

WPE MiniBrowser

Linux

2026-06

Servo

Android

2026-06

Chrome Browser

Android

64

Safari Browser

iOS

13.4