Bug 1639051 - Remove fission without webrender infobar;r=Gijs

Differential Revision: https://phabricator.services.mozilla.com/D76099

browser/base/content/browser.js

@@ -9219,35 +9219,6 @@ if (AppConstants.NIGHTLY_BUILD) {
 
       newFissionWindow.hidden = gFissionBrowser;
       newNonFissionWindow.hidden = !gFissionBrowser;
-
-      if (!Cu.isInAutomation) {
-        // We don't want to display the warning in automation as it messes with many tests
-        // that rely on a specific state of the screen at the end of startup.
-        this.checkFissionWithoutWebRender();
-      }
-    },
-
-    // Display a warning if we're attempting to use Fission without WebRender
-    checkFissionWithoutWebRender() {
-      let isFissionEnabled = Services.prefs.getBoolPref("fission.autostart");
-      if (!isFissionEnabled) {
-        return;
-      }
-
-      let isWebRenderEnabled = Cc["@mozilla.org/gfx/info;1"].getService(
-        Ci.nsIGfxInfo
-      ).WebRenderEnabled;
-
-      if (isWebRenderEnabled) {
-        return;
-      }
-      // Note: Test is hardcoded in English. This is a Nightly-locked warning, so we can afford to.
-      window.gNotificationBox.appendNotification(
-        "You are running with Fission enabled but without WebRender. This combination is untested, so use at your own risk.",
-        "warning-fission-without-webrender-notification",
-        "chrome://global/skin/icons/question-16.png",
-        window.gNotificationBox.PRIORITY_WARNING_LOW
-      );
     },
   };
 }

browser/base/content/test/performance/browser.ini

@@ -43,12 +43,11 @@ skip-if = (verify && !debug && (os == 'win')) || (!debug && (os == 'win') && (bi
 skip-if = os == 'win' #Bug 1455054
 [browser_toolbariconcolor_restyles.js]
 [browser_urlbar_keyed_search.js]
-skip-if = (os == 'win' && bits == 32) || (os == 'mac')  || (fission && !webrender) # fission && !webrender: The startup warning confuses the test. Also, this is an unsupported combo. / Disabled on Win32 because of intermittent OOM failures (bug 1448241), macosx1014 due to 1565619
+skip-if = (os == 'win' && bits == 32) || (os == 'mac') # Disabled on Win32 because of intermittent OOM failures (bug 1448241), macosx1014 due to 1565619
 [browser_urlbar_search.js]
 skip-if = (debug || ccov) && (os == 'linux' || os == 'win') || (os == 'win' && bits == 32) # Disabled on Linux and Windows debug and ccov due to intermittent timeouts. Bug 1414126, bug 1426611. Disabled on Win32 because of intermittent OOM failures (bug 1448241)
 [browser_window_resize.js]
 [browser_windowclose.js]
 [browser_windowopen.js]
-skip-if = (fission && !webrender) # fission && !webrender: The startup warning confuses the test. Also, this is an unsupported combo.
 
 

browser/components/tests/browser/browser.ini

@@ -10,6 +10,4 @@ reason = test depends on update channel
 [browser_urlbar_matchBuckets_migration60.js]
 skip-if = os == 'win' #Bug 1592498
 
-[browser_webrender_and_fission_notification.js]
-run-if = nightly_build
 

browser/components/tests/browser/browser_webrender_and_fission_notification.js

@@ -1,29 +0,0 @@
-/* Any copyright is dedicated to the Public Domain.
- * http://creativecommons.org/publicdomain/zero/1.0/ */
-
-// Makes sure that we report correctly the combo fission + non-webrender
-
-"use strict";
-
-add_task(async function() {
-  // Run the check manually. Otherwise, it is deactivated during automation.
-  FissionTestingUI.checkFissionWithoutWebRender();
-
-  const isFissionEnabled = Services.prefs.getBoolPref("fission.autostart");
-  let isWebRenderEnabled = Cc["@mozilla.org/gfx/info;1"].getService(
-    Ci.nsIGfxInfo
-  ).WebRenderEnabled;
-  const isWarningExpected = isFissionEnabled && !isWebRenderEnabled;
-
-  // Wait until the browser has had a chance to display the warning.
-  await gBrowserInit.idleTasksFinishedPromise;
-
-  let isWarningFound = !!gNotificationBox.getNotificationWithValue(
-    "warning-fission-without-webrender-notification"
-  );
-  is(
-    isWarningFound,
-    isWarningExpected,
-    "Did we get the Fission/WebRender warning right?"
-  );
-});