Bug 1842283 - make the image info collected in ContextMenuChild and PageInfoChild match better to have 'View Image Info' work more often, r=mconley.

Differential Revision: https://phabricator.services.mozilla.com/D186962

Author: fqueze

browser/actors/ContextMenuChild.sys.mjs

@@ -944,7 +944,11 @@ export class ContextMenuChild extends JSWindowActorChild {
         currentSrc: context.target.currentSrc,
         width: context.target.width,
         height: context.target.height,
-        imageText: context.target.title || context.target.alt,
+        imageText: this.contentWindow.ImageDocument.isInstance(
+          context.target.ownerDocument
+        )
+          ? undefined
+          : context.target.title || context.target.alt,
       };
       const { SVGAnimatedLength } = context.target.ownerGlobal;
       if (SVGAnimatedLength.isInstance(context.imageInfo.height)) {

browser/actors/PageInfoChild.sys.mjs

@@ -181,7 +181,7 @@ export class PageInfoChild extends JSWindowActorChild {
     // One swi^H^H^Hif-else to rule them all.
     if (content.HTMLImageElement.isInstance(elem)) {
       addMedia(
-        elem.src,
+        elem.currentSrc,
         "img",
         elem.getAttribute("alt"),
         elem,