Move several content observer registrations to background

Moves several content observer registrations to background using new
async APIs to prevent content observer jank.

Bug: 327558308
Flag: com.android.systemui.register_content_observers_async
Test: built, unit tested, checked panther
Change-Id: I748b645b57480442664fba0a7d1e366d5c30c233
diff --git a/packages/SystemUI/src/com/android/systemui/doze/DozeSensors.java b/packages/SystemUI/src/com/android/systemui/doze/DozeSensors.java
index 7ae8409..e07b5c2 100644
--- a/packages/SystemUI/src/com/android/systemui/doze/DozeSensors.java
+++ b/packages/SystemUI/src/com/android/systemui/doze/DozeSensors.java
@@ -48,6 +48,7 @@
 import com.android.internal.logging.UiEvent;
 import com.android.internal.logging.UiEventLogger;
 import com.android.internal.logging.UiEventLoggerImpl;
+import com.android.systemui.Flags;
 import com.android.systemui.biometrics.AuthController;
 import com.android.systemui.plugins.SensorManagerPlugin;
 import com.android.systemui.statusbar.phone.DozeParameters;
@@ -426,7 +427,11 @@
         }
 
         if (!anyListening) {
-            mSecureSettings.unregisterContentObserverSync(mSettingsObserver);
+            if (Flags.registerContentObserversAsync()) {
+                mSecureSettings.unregisterContentObserverAsync(mSettingsObserver);
+            } else {
+                mSecureSettings.unregisterContentObserverSync(mSettingsObserver);
+            }
         } else if (!mSettingRegistered) {
             for (TriggerSensor s : mTriggerSensors) {
                 s.registerSettingsObserver(mSettingsObserver);
@@ -750,8 +755,13 @@
 
         public void registerSettingsObserver(ContentObserver settingsObserver) {
             if (mConfigured && !TextUtils.isEmpty(mSetting)) {
-                mSecureSettings.registerContentObserverForUserSync(
-                        mSetting, mSettingsObserver, UserHandle.USER_ALL);
+                if (Flags.registerContentObserversAsync()) {
+                    mSecureSettings.registerContentObserverForUserAsync(
+                            mSetting, mSettingsObserver, UserHandle.USER_ALL);
+                } else {
+                    mSecureSettings.registerContentObserverForUserSync(
+                            mSetting, mSettingsObserver, UserHandle.USER_ALL);
+                }
             }
         }
 
diff --git a/packages/SystemUI/src/com/android/systemui/settings/brightness/BrightnessController.java b/packages/SystemUI/src/com/android/systemui/settings/brightness/BrightnessController.java
index 49810762..8e53949 100644
--- a/packages/SystemUI/src/com/android/systemui/settings/brightness/BrightnessController.java
+++ b/packages/SystemUI/src/com/android/systemui/settings/brightness/BrightnessController.java
@@ -137,14 +137,24 @@
         public void startObserving() {
             if (!mObserving) {
                 mObserving = true;
-                mSecureSettings.registerContentObserverForUserSync(
-                        BRIGHTNESS_MODE_URI,
-                        false, this, UserHandle.USER_ALL);
+                if (Flags.registerContentObserversAsync()) {
+                    mSecureSettings.registerContentObserverForUserAsync(
+                            BRIGHTNESS_MODE_URI,
+                            false, this, UserHandle.USER_ALL);
+                } else {
+                    mSecureSettings.registerContentObserverForUserSync(
+                            BRIGHTNESS_MODE_URI,
+                            false, this, UserHandle.USER_ALL);
+                }
             }
         }
 
         public void stopObserving() {
-            mSecureSettings.unregisterContentObserverSync(this);
+            if (Flags.registerContentObserversAsync()) {
+                mSecureSettings.unregisterContentObserverAsync(this);
+            } else {
+                mSecureSettings.unregisterContentObserverSync(this);
+            }
             mObserving = false;
         }
 
diff --git a/packages/SystemUI/src/com/android/systemui/util/settings/UserSettingsProxy.kt b/packages/SystemUI/src/com/android/systemui/util/settings/UserSettingsProxy.kt
index 025354b..848a6e6 100644
--- a/packages/SystemUI/src/com/android/systemui/util/settings/UserSettingsProxy.kt
+++ b/packages/SystemUI/src/com/android/systemui/util/settings/UserSettingsProxy.kt
@@ -16,12 +16,12 @@
 package com.android.systemui.util.settings
 
 import android.annotation.UserIdInt
+import android.annotation.WorkerThread
 import android.content.ContentResolver
 import android.database.ContentObserver
 import android.net.Uri
 import android.os.UserHandle
 import android.provider.Settings.SettingNotFoundException
-import androidx.annotation.WorkerThread
 import com.android.app.tracing.TraceUtils.trace
 import com.android.systemui.settings.UserTracker
 import com.android.systemui.util.settings.SettingsProxy.Companion.parseFloat
@@ -67,6 +67,7 @@
         } else userTracker.userId
     }
 
+    @WorkerThread
     override fun registerContentObserverSync(uri: Uri, settingsObserver: ContentObserver) {
         registerContentObserverForUserSync(uri, settingsObserver, userId)
     }
@@ -83,6 +84,7 @@
         }
 
     /** Convenience wrapper around [ContentResolver.registerContentObserver].' */
+    @WorkerThread
     override fun registerContentObserverSync(
         uri: Uri,
         notifyForDescendants: Boolean,
@@ -120,6 +122,7 @@
      *
      * Implicitly calls [getUriFor] on the passed in name.
      */
+    @WorkerThread
     fun registerContentObserverForUserSync(
         name: String,
         settingsObserver: ContentObserver,
@@ -160,6 +163,7 @@
         }
 
     /** Convenience wrapper around [ContentResolver.registerContentObserver] */
+    @WorkerThread
     fun registerContentObserverForUserSync(
         uri: Uri,
         settingsObserver: ContentObserver,
@@ -222,6 +226,7 @@
      *
      * Implicitly calls [getUriFor] on the passed in name.
      */
+    @WorkerThread
     fun registerContentObserverForUserSync(
         name: String,
         notifyForDescendants: Boolean,
@@ -281,6 +286,7 @@
     }
 
     /** Convenience wrapper around [ContentResolver.registerContentObserver] */
+    @WorkerThread
     fun registerContentObserverForUserSync(
         uri: Uri,
         notifyForDescendants: Boolean,