Cleaning Utilities.java

> Removing some unused methods
> Moving some specialized methods to corresponding classes
> Removing GridProvider check as it is released

Bug: 257555083
Test: Presubmit
Change-Id: Ib0f8c673d018071d3f4b7d9247e0a35718ab009c
Merged-In: Ib0f8c673d018071d3f4b7d9247e0a35718ab009c

src/com/android/launcher3/util/BgObjectWithLooper.java

@@ -15,10 +15,15 @@
  */
 package com.android.launcher3.util;
 
+import android.database.ContentObserver;
+import android.net.Uri;
+import android.os.Handler;
 import android.os.Looper;
 
 import androidx.annotation.WorkerThread;
 
+import java.util.function.Consumer;
+
 /**
  * Utility class to define an object which does most of it's processing on a
  * dedicated background thread.
@@ -43,4 +48,16 @@ public abstract class BgObjectWithLooper {
      */
     @WorkerThread
     protected abstract void onInitialized(Looper looper);
+
+    /**
+     * Helper method to create a content provider
+     */
+    protected static ContentObserver newContentObserver(Handler handler, Consumer<Uri> command) {
+        return new ContentObserver(handler) {
+            @Override
+            public void onChange(boolean selfChange, Uri uri) {
+                command.accept(uri);
+            }
+        };
+    }
 }