Bug 1586254 - Make sure runUrlbarTest doesn't complain about 'unexpected changed rect' in the non-megabar results panel. r=mak

Differential Revision: https://phabricator.services.mozilla.com/D48663

--HG--
extra : moz-landing-system : lando

browser/base/content/test/performance/head.js

@@ -781,16 +781,14 @@ async function runUrlbarTest(
       },
     };
   } else {
+    // Hide the results as we expect many changes there that we don't want to
+    // detect here.
+    URLBar.view.panel.style.visibility = "hidden";
+
     let dropmarkerRect = URLBar.dropmarker.getBoundingClientRect();
     let textBoxRect = URLBar.querySelector(
       "moz-input-box"
     ).getBoundingClientRect();
-    let resultsRect = {
-      top: URLBar.textbox.closest("toolbar").getBoundingClientRect().bottom,
-      right: win.innerWidth,
-      bottom: win.innerHeight,
-      left: 0,
-    };
     expectedRects = {
       filter: rects =>
         rects.filter(
@@ -806,12 +804,7 @@ async function runUrlbarTest(
               (r.x1 >= dropmarkerRect.left - 1 &&
                 r.x2 <= dropmarkerRect.right + 1 &&
                 r.y1 >= dropmarkerRect.top &&
-                r.y2 <= dropmarkerRect.bottom) ||
-              // We expect many changes in the results view.
-              (r.x1 >= resultsRect.left &&
-                r.x2 <= resultsRect.right &&
-                r.y1 >= resultsRect.top &&
-                r.y2 <= resultsRect.bottom)
+                r.y2 <= dropmarkerRect.bottom)
             )
         ),
     };