Backed out 9 changesets (bug 1485676) for failures in browser/tools/mozscreenshots/devtools/browser_devtools.js CLOSED TREE

Backed out changeset d358feec4ca1 (bug 1485676)
Backed out changeset ed554dbb062f (bug 1485676)
Backed out changeset 6e78058df94d (bug 1485676)
Backed out changeset 3a6f1b0e71f4 (bug 1485676)
Backed out changeset 16d2403aa787 (bug 1485676)
Backed out changeset 454eddf52157 (bug 1485676)
Backed out changeset 926f725f2183 (bug 1485676)
Backed out changeset fb03f174bd5f (bug 1485676)
Backed out changeset ceb93dd1799a (bug 1485676)

devtools/shared/fronts/csscoverage.js

@@ -110,11 +110,11 @@ const knownFronts = new WeakMap();
 
 /**
  * Create a CSSUsageFront only when needed (returns a promise)
- * For notes on target.attach(), see
+ * For notes on target.makeRemote(), see
  * https://bugzilla.mozilla.org/show_bug.cgi?id=1016330#c7
  */
 exports.getUsage = function(trgt) {
-  return trgt.attach().then(() => {
+  return trgt.makeRemote().then(() => {
     let front = knownFronts.get(trgt.client);
     if (front == null && trgt.form.cssUsageActor != null) {
       front = new CSSUsageFront(trgt.client, trgt.form);