Backed out 8 changesets (bug 1679440, bug 1682069, bug 1667276) for causing failure on test_crash_backgroundtask_moz_crash.js. CLOSED TREE

Backed out changeset f06504e3219f (bug 1682069)
Backed out changeset 4d325f68ea24 (bug 1679440)
Backed out changeset 9ab334e527a5 (bug 1667276)
Backed out changeset 1c8d51d2c90f (bug 1667276)
Backed out changeset 8d6f10d83c6b (bug 1667276)
Backed out changeset 62488ec634f9 (bug 1667276)
Backed out changeset 1dcb2d1be264 (bug 1667276)
Backed out changeset c673fff5bd85 (bug 1667276)

Author: Butkovits Atila

.eslintignore

@@ -220,6 +220,3 @@ tools/tryselect/selectors/chooser/templates/chooser.html
 
 # Ignore preprocessed *(P)refs.js files in update-packaging.
 tools/update-packaging/**/*refs.js
-
-# Ignore backgroundtasks preferences files.
-toolkit/components/backgroundtasks/defaults

.prettierignore

@@ -58,6 +58,3 @@ devtools/client/debugger/src/test/mochitest/examples/ember/quickstart
 
 # These are source mapped and the locations are asserted in the test case.
 devtools/client/webconsole/test/browser/test-mangled-function.*
-
-# Ignore backgroundtasks preferences files.
-toolkit/components/backgroundtasks/defaults

browser/base/content/test/static/browser_all_files_referenced.js

@@ -55,13 +55,6 @@ if (AppConstants.platform == "macosx") {
   gExceptionPaths.push("resource://gre/res/touchbar/");
 }
 
-if (AppConstants.MOZ_BACKGROUNDTASKS) {
-  // These preferences are active only when we're in background task mode.
-  gExceptionPaths.push("resource://gre/defaults/backgroundtasks/");
-  // `BackgroundTask_id.jsm` is loaded at runtime by `app --backgroundtask id ...`.
-  gExceptionPaths.push("resource://gre/modules/backgroundtasks/");
-}
-
 // Each whitelist entry should have a comment indicating which file is
 // referencing the whitelisted file in a way that the test can't detect, or a
 // bug number to remove or use the file if it is indeed currently unreferenced.

browser/installer/Makefile.in

@@ -98,10 +98,6 @@ ifdef MOZ_DEFAULT_BROWSER_AGENT
 DEFINES += -DMOZ_DEFAULT_BROWSER_AGENT=1
 endif
 
-ifdef MOZ_BACKGROUNDTASKS
-DEFINES += -DMOZ_BACKGROUNDTASKS=1
-endif
-
 ifeq (cocoa,$(MOZ_WIDGET_TOOLKIT))
 MOZ_PKG_MAC_DSSTORE=$(topsrcdir)/$(MOZ_BRANDING_DIRECTORY)/dsstore
 MOZ_PKG_MAC_BACKGROUND=$(topsrcdir)/$(MOZ_BRANDING_DIRECTORY)/background.png

browser/installer/package-manifest.in

@@ -305,12 +305,6 @@
 ; gre location for now.
 @RESPATH@/defaults/pref/channel-prefs.js
 
-; Background tasks-specific preferences.  These are in the GRE
-; location since they apply to all tasks at this time.
-#ifdef MOZ_BACKGROUNDTASKS
-@RESPATH@/defaults/backgroundtasks/backgroundtasks.js
-#endif
-
 ; [Layout Engine Resources]
 ; Style Sheets, Graphics and other Resources used by the layout engine.
 @RESPATH@/res/EditorOverride.css

extensions/pref/autoconfig/src/components.conf

@@ -11,11 +11,6 @@ Classes = [
         'type': 'nsReadConfig',
         'headers': ['/extensions/pref/autoconfig/src/nsReadConfig.h'],
         'init_method': 'Init',
-        'categories': {
-            'pref-config-startup': {
-                'name': 'ReadConfig Module',
-                'backgroundtasks': BackgroundTasksSelector.ALL_TASKS,
-            },
-        },
+        'categories': {'pref-config-startup': 'ReadConfig Module'},
     },
 ]

layout/build/components.conf

@@ -96,12 +96,7 @@ Classes = [
         'cid': '{fc886801-e768-11d4-9885-00c04fa0cf4b}',
         'contract_ids': ['@mozilla.org/content/document-loader-factory;1'],
         'type': 'nsIDocumentLoaderFactory',
-        'categories': {
-            'Gecko-Content-Viewers': {
-                'name': content_types,
-                'backgroundtasks': BackgroundTasksSelector.ALL_TASKS,
-            }
-        },
+        'categories': {'Gecko-Content-Viewers': content_types},
     },
     {
         'cid': '{0ddf4df8-4dbb-4133-8b79-9afb966514f5}',
@@ -294,14 +289,8 @@ Classes = [
         'type': 'nsMixedContentBlocker',
         'headers': ['mozilla/dom/nsMixedContentBlocker.h'],
         'categories': {
-            'content-policy': {
-                'name': '@mozilla.org/mixedcontentblocker;1',
-                'backgroundtasks': BackgroundTasksSelector.ALL_TASKS,
-            },
-            'net-channel-event-sinks': {
-                'name': '@mozilla.org/mixedcontentblocker;1',
-                'backgroundtasks': BackgroundTasksSelector.ALL_TASKS,
-            },
+            'content-policy': '@mozilla.org/mixedcontentblocker;1',
+            'net-channel-event-sinks': '@mozilla.org/mixedcontentblocker;1',
         },
     },
     {

modules/libpref/Preferences.cpp

@@ -86,9 +86,6 @@
 #include "plstr.h"
 #include "prlink.h"
 #include "xpcpublic.h"
-#ifdef MOZ_BACKGROUNDTASKS
-#  include "mozilla/BackgroundTasks.h"
-#endif
 
 #ifdef DEBUG
 #  include <map>
@@ -4533,13 +4530,6 @@ nsresult Preferences::InitInitialObjects(bool aIsStartup) {
     rv = pref_ReadDefaultPrefs(jarReader, "defaults/pref/*.js$");
     NS_ENSURE_SUCCESS(rv, rv);
 
-#ifdef MOZ_BACKGROUNDTASKS
-    if (BackgroundTasks::IsBackgroundTaskMode()) {
-      rv = pref_ReadDefaultPrefs(jarReader, "defaults/backgroundtasks/*.js$");
-      NS_ENSURE_SUCCESS(rv, rv);
-    }
-#endif
-
 #ifdef MOZ_WIDGET_ANDROID
     // Load jar:$gre/omni.jar!/defaults/pref/$MOZ_ANDROID_CPU_ABI/*.js.
     nsAutoCString path;
@@ -4619,25 +4609,6 @@ nsresult Preferences::InitInitialObjects(bool aIsStartup) {
         NS_WARNING("Error parsing preferences.");
       }
     }
-
-#ifdef MOZ_BACKGROUNDTASKS
-    if (BackgroundTasks::IsBackgroundTaskMode()) {
-      rv = appJarReader->FindInit("defaults/backgroundtasks/*.js$",
-                                  getter_Transfers(find));
-      NS_ENSURE_SUCCESS(rv, rv);
-      prefEntries.Clear();
-      while (NS_SUCCEEDED(find->FindNext(&entryName, &entryNameLen))) {
-        prefEntries.AppendElement(Substring(entryName, entryNameLen));
-      }
-      prefEntries.Sort();
-      for (uint32_t i = prefEntries.Length(); i--;) {
-        rv = pref_ReadPrefFromJar(appJarReader, prefEntries[i].get());
-        if (NS_FAILED(rv)) {
-          NS_WARNING("Error parsing preferences.");
-        }
-      }
-    }
-#endif
   }
 
   nsCOMPtr<nsIProperties> dirSvc(

modules/libpref/moz.build

@@ -167,6 +167,3 @@ else:
     FINAL_TARGET_PP_FILES += [
         "greprefs.js",
     ]
-
-if CONFIG["MOZ_BACKGROUNDTASKS"]:
-    DEFINES["MOZ_BACKGROUNDTASKS"] = True

startupcache/StartupCache.cpp

@@ -35,9 +35,6 @@
 #include "GeckoProfiler.h"
 #include "nsAppRunner.h"
 #include "xpcpublic.h"
-#ifdef MOZ_BACKGROUNDTASKS
-#  include "mozilla/BackgroundTasks.h"
-#endif
 
 #if defined(XP_WIN)
 #  include <windows.h>
@@ -118,12 +115,6 @@ StartupCache* StartupCache::GetSingletonNoInit() {
 }
 
 StartupCache* StartupCache::GetSingleton() {
-#ifdef MOZ_BACKGROUNDTASKS
-  if (BackgroundTasks::IsBackgroundTaskMode()) {
-    return nullptr;
-  }
-#endif
-
   if (!gStartupCache) {
     if (!XRE_IsParentProcess()) {
       return nullptr;