Bug 1397795 part 3 - Don't rely on opaque widgets not having overflow. r=mstange

MozReview-Commit-ID: GJNDwQUjfEr
2018-02-19 16:00:32 +00:00 · 2018-02-19 16:00:32 +00:00 · f6c1f57fe8
--- a/devtools/server/actors/highlighters.css
+++ b/devtools/server/actors/highlighters.css
@ -7,9 +7,6 @@
  from impacting web content. Indeed, this pseudo-class is only available to chrome code.
  This stylesheet is loaded as a ua stylesheet via the addon sdk, so having this
  pseudo-class is important.
-  Having bug 1086532 fixed would make it possible to load this stylesheet in a
-  <style scoped> node instead, directly in the native anonymous container
-  element.

  A specific selector should still be specified to avoid impacting non-devtools
  chrome content.
--- a/devtools/server/actors/highlighters/utils/markup.js
+++ b/devtools/server/actors/highlighters/utils/markup.js
@ -254,7 +254,7 @@ CanvasFrameAnonymousContentHelper.prototype = {
    }

    // For now highlighters.css is injected in content as a ua sheet because
-    // <style scoped> doesn't work inside anonymous content (see bug 1086532).
+    // we no longer support scoped style sheets (see bug 1345702).
    // If it did, highlighters.css would be injected as an anonymous content
    // node using CanvasFrameAnonymousContentHelper instead.
    loadSheet(this.highlighterEnv.window, STYLESHEET_URI);
--- a/dom/base/crashtests/1026714.html
+++ b/dom/base/crashtests/1026714.html
@ -1,16 +0,0 @@
-<!DOCTYPE html>
-<html>
-<body onload="f()">
-  <div></div>
-  <style>
-    div { color: blue; }
-  </style>
-  <script>
-    function f() {
-      // This should not leak.
-      var div = document.querySelector("div");
-      var shadow = div.createShadowRoot();
-      shadow.innerHTML = '<div><style scoped>p { color: green; }</style>';
-    }
-  </script>
-</body>
--- a/dom/base/crashtests/crashtests.list
+++ b/dom/base/crashtests/crashtests.list
@ -193,7 +193,6 @@ load 942979.html
 load 973401.html
 load 978646.html
 pref(dom.webcomponents.shadowdom.enabled,true) load 1024428-1.html
-load 1026714.html
 pref(dom.webcomponents.shadowdom.enabled,true) load 1027461-1.html
 pref(dom.webcomponents.shadowdom.enabled,true) load 1029710.html
 load 1154598.xhtml