Open this on an Android device and install it (Chrome menu → "Install app" / "Add to Home screen"). The app's only icon is an SVG declared with sizes:"any" and no intrinsic width/height.
The WebAPK installs and lands on the home screen with the SVG rasterized as its icon.
Install failed and fell back to a bookmark shortcut. DevTools console showed failed to install webapk for: [manifest url]. Removing sizes:"any" made it installable again.
An icon with sizes:"any" is a scalable SVG that usually has no intrinsic width/height (only a viewBox). On install the WebAPK flow re-downloads and rasterizes icons via WebContents::DownloadImage() → blink::WebImage::DecodeSVG(data, desired_size). When desired_size was empty, a sizeless SVG rasterized to a 0×0 empty bitmap, so the icon had no data and the WebAPK request failed.
sizeless SVG + empty desired size -> empty 0x0 bitmap (install fails)
sizeless SVG + concrete size 48x48 -> valid 48x48 bitmap (install works)The Android WebAPK path now derives a concrete preferred size from each icon's usage (primary / splash / shortcut) before downloading, so SVG icons decode to a real bitmap.
Android fix: "Reland: Fix installing WebAPK with SVG icon" (crrev.com/c/4544539). Desktop equivalent (crbug/40911689): "[dPWA] Preprocess icon downloads to support SVGs" (crrev.com/c/5234019).