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Add WebExtension clone and image bitmap compatibility fallbacks

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wuggy 2026-09-19 05:05:48 -07:00
commit a16ea2362b
2 changed files with 74 additions and 5 deletions
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16
toolkit/components/webextensions/ExtensionChild.jsm
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@ -773,6 +773,21 @@ class ExtensionPageContextChild extends BaseContext {
}
this.sender = sender;
// Older UXP WebIDL bindings throw synchronously when extensions use
// createImageBitmap() as a zero-argument feature probe. Keep valid calls
// native, but make the probe harmless in extension pages.
if (typeof contentWindow.createImageBitmap == "function") {
let nativeCreateImageBitmap = contentWindow.createImageBitmap;
try {
contentWindow.createImageBitmap = function(...args) {
if (args.length == 0) {
return contentWindow.Promise.resolve(null);
}
return nativeCreateImageBitmap.apply(this, args);
};
} catch (e) {}
}
Schemas.exportLazyGetter(contentWindow, "browser", () => {
let browserObj = Cu.createObjectIn(contentWindow);
Schemas.inject(browserObj, this.childManager);
@ -1055,4 +1070,3 @@ Object.assign(ExtensionChild, {
Messenger,
Port,
});