Bug 1771822 - Do not explicitly set apz.allow_zooming in mochitests. r=tnikkel

We can't do likewise for reftests and web platform tests because
those test suites disable apz.allow_zooming by default on android.

Differential Revision: https://phabricator.services.mozilla.com/D151576

dom/base/test/meta_viewport/viewport_helpers.js

@@ -2,7 +2,6 @@ function scaleRatio(scale) {
   return {
     set: [
       ["layout.css.devPixelsPerPx", "" + scale],
-      ["apz.allow_zooming", true],
       ["dom.meta-viewport.enabled", true],
     ],
   };

dom/base/test/test_viewport_metrics_on_landscape_content.html

@@ -10,7 +10,6 @@
 SimpleTest.waitForExplicitFinish();
 SpecialPowers.pushPrefEnv({
   "set": [
-    ["apz.allow_zooming", true],
     ["dom.meta-viewport.enabled", true],
   ]
 }, () => {

gfx/layers/apz/test/mochitest/browser.ini

@@ -1,6 +1,4 @@
 [DEFAULT]
-prefs =
-  apz.allow_zooming=true
 support-files =
   apz_test_native_event_utils.js
   apz_test_utils.js

gfx/layers/apz/test/mochitest/test_group_checkerboarding.html

@@ -27,7 +27,6 @@
       var zoom_and_pan_prefs = [
         ...prefs,
         ...getPrefs("TOUCH_EVENTS:PAN"),
-        ["apz.allow_zooming", true],
       ];
 
       var no_multiplier_prefs = [

gfx/layers/apz/test/mochitest/test_group_minimum_scale_size.html

@@ -21,9 +21,6 @@ const prefs = [
   // test takes too long the displayport can expire before we read the value
   // out of the test. So we disable displayport expiry for these tests.
   ["apz.displayport_expiry_ms", 0],
-  // Explicitly enable pinch-zooming, so this test can run on desktop
-  // even though zooming isn't enabled by default on desktop yet.
-  ["apz.allow_zooming", true],
   // Similarly, explicitly enable support for meta viewport tags (which the
   // test cases use) so they're processed even on desktop.
   ["dom.meta-viewport.enabled", true],

gfx/layers/apz/test/mochitest/test_group_touchevents-4.html

@@ -15,20 +15,13 @@ var subtests = [
   // clicking on element with :active::after CSS property
   {"file": "helper_bug1473108.html"},
   // Resetting isFirstPaint shouldn't clobber the visual viewport
-  {"file": "helper_bug1509575.html", "prefs": [
-    ["apz.allow_zooming", true],
-    ...getPrefs("TOUCH_EVENTS:PAN")
-  ]},
+  {"file": "helper_bug1509575.html", "prefs": getPrefs("TOUCH_EVENTS:PAN")},
   // Exercise one of the main-thread touch-action determination codepaths.
   {"file": "helper_bug1506497_touch_action_fixed_on_fixed.html", "prefs": touch_action_prefs},
-  {"file": "helper_bug1637113_main_thread_hit_test.html",
-   "prefs": [["apz.allow_zooming", true]]},
-  {"file": "helper_bug1638458_contextmenu.html",
-   "prefs": [["apz.allow_zooming", true]]},
-  {"file": "helper_bug1638441_fixed_pos_hit_test.html",
-   "prefs": [["apz.allow_zooming", true]]},
-  {"file": "helper_bug1637135_narrow_viewport.html", "prefs": [["apz.allow_zooming", true],
-                                                               ["dom.meta-viewport.enabled", true]]},
+  {"file": "helper_bug1637113_main_thread_hit_test.html"},
+  {"file": "helper_bug1638458_contextmenu.html"},
+  {"file": "helper_bug1638441_fixed_pos_hit_test.html"},
+  {"file": "helper_bug1637135_narrow_viewport.html", "prefs": [["dom.meta-viewport.enabled", true]]},
   {"file": "helper_bug1714934_mouseevent_buttons.html"},
 
   // Add new subtests here. If this starts timing out because it's taking too

gfx/layers/apz/test/mochitest/test_group_zoom-2.html

@@ -24,9 +24,6 @@ var prefs = [
   // test takes too long the displayport can expire before we read the value
   // out of the test. So we disable displayport expiry for these tests.
   ["apz.displayport_expiry_ms", 0],
-  // Explicitly enable pinch-zooming, so this test can run on desktop
-  // even though zooming isn't enabled by default on desktop yet.
-  ["apz.allow_zooming", true],
   // Increase the content response timeout because some tests do preventDefault
   // and we want to make sure APZ actually waits for them.
   ["apz.content_response_timeout", 60000],

gfx/layers/apz/test/mochitest/test_group_zoom.html

@@ -23,9 +23,6 @@ var prefs = [
   // test takes too long the displayport can expire before we read the value
   // out of the test. So we disable displayport expiry for these tests.
   ["apz.displayport_expiry_ms", 0],
-  // Explicitly enable pinch-zooming, so this test can run on desktop
-  // even though zooming isn't enabled by default on desktop yet.
-  ["apz.allow_zooming", true],
   // Increase the content response timeout because some tests do preventDefault
   // and we want to make sure APZ actually waits for them.
   ["apz.content_response_timeout", 60000],

layout/base/tests/browser_visual_viewport_iframe.js

@@ -10,10 +10,7 @@ add_task(async () => {
   }
 
   await SpecialPowers.pushPrefEnv({
-    set: [
-      ["apz.allow_zooming", true],
-      ["dom.meta-viewport.enabled", true],
-    ],
+    set: [["dom.meta-viewport.enabled", true]],
   });
 
   const fissionWindow = await BrowserTestUtils.openNewBrowserWindow({

layout/base/tests/test_dynamic_toolbar_max_height.html

@@ -10,7 +10,6 @@ SpecialPowers.pushPrefEnv(
   {
     set: [
       ["dom.meta-viewport.enabled", true],
-      ["apz.allow_zooming", true],
     ],
   },
   function() {