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Make createImageBitmap() zero-argument

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wuggy 2026-09-19 05:18:51 -07:00
commit e98942c307
1 changed files with 21 additions and 7 deletions
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28
toolkit/components/webextensions/ExtensionChild.jsm
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@ -778,14 +778,28 @@ class ExtensionPageContextChild extends BaseContext {
// native, but make the probe harmless in extension pages.
if (typeof contentWindow.createImageBitmap == "function") {
let nativeCreateImageBitmap = contentWindow.createImageBitmap;
let extensionCreateImageBitmap = function(...args) {
if (args.length == 0) {
return contentWindow.Promise.resolve(null);
}
return nativeCreateImageBitmap.apply(this, args);
};
try {
contentWindow.createImageBitmap = function(...args) {
if (args.length == 0) {
return contentWindow.Promise.resolve(null);
}
return nativeCreateImageBitmap.apply(this, args);
};
} catch (e) {}
// Window.createImageBitmap is inherited from a WebIDL prototype in
// older UXP builds. Assignment can therefore leave the native
// method in place; define an own property so extension feature probes
// actually reach the compatibility wrapper.
Object.defineProperty(contentWindow, "createImageBitmap", {
configurable: true,
enumerable: true,
writable: true,
value: extensionCreateImageBitmap,
});
} catch (e) {
try {
contentWindow.createImageBitmap = extensionCreateImageBitmap;
} catch (e2) {}
}
}
Schemas.exportLazyGetter(contentWindow, "browser", () => {