[Fast Pair] Remove unused fast pair enabling

Test: -m
Ignore-AOSP-First: nearby_not_in_aosp_yet
Change-Id: I414fd532ef66930e0b7f2313443b0f1358a53662

nearby/framework/java/android/nearby/NearbyManager.java

@@ -28,7 +28,6 @@ import android.annotation.SystemService;
 import android.content.Context;
 import android.nearby.aidl.IOffloadCallback;
 import android.os.RemoteException;
-import android.provider.Settings;
 import android.util.Log;
 
 import com.android.internal.annotations.GuardedBy;
@@ -287,34 +286,6 @@ public class NearbyManager {
         }
     }
 
-    /**
-     * Read from {@link Settings} whether Fast Pair scan is enabled.
-     *
-     * @param context the {@link Context} to query the setting
-     * @return whether the Fast Pair is enabled
-     * @hide
-     */
-    public static boolean getFastPairScanEnabled(@NonNull Context context) {
-        final int enabled = Settings.Secure.getInt(
-                context.getContentResolver(), FAST_PAIR_SCAN_ENABLED, 0);
-        return enabled != 0;
-    }
-
-    /**
-     * Write into {@link Settings} whether Fast Pair scan is enabled
-     *
-     * @param context the {@link Context} to set the setting
-     * @param enable whether the Fast Pair scan should be enabled
-     * @hide
-     */
-    @RequiresPermission(Manifest.permission.WRITE_SECURE_SETTINGS)
-    public static void setFastPairScanEnabled(@NonNull Context context, boolean enable) {
-        Settings.Secure.putInt(
-                context.getContentResolver(), FAST_PAIR_SCAN_ENABLED, enable ? 1 : 0);
-        Log.v(TAG, String.format(
-                "successfully %s Fast Pair scan", enable ? "enables" : "disables"));
-    }
-
     private static class OffloadTransport extends IOffloadCallback.Stub {
 
         private final Executor mExecutor;

nearby/service/java/com/android/server/nearby/fastpair/FastPairManager.java

@@ -33,7 +33,6 @@ import android.bluetooth.BluetoothAdapter;
 import android.bluetooth.BluetoothDevice;
 import android.bluetooth.BluetoothManager;
 import android.content.BroadcastReceiver;
-import android.content.ContentResolver;
 import android.content.Context;
 import android.content.Intent;
 import android.content.IntentFilter;
@@ -43,8 +42,6 @@ import android.nearby.NearbyDevice;
 import android.nearby.NearbyManager;
 import android.nearby.ScanCallback;
 import android.nearby.ScanRequest;
-import android.net.Uri;
-import android.provider.Settings;
 import android.util.Log;
 
 import androidx.annotation.NonNull;
@@ -105,7 +102,7 @@ public class FastPairManager {
     final LocatorContextWrapper mLocatorContextWrapper;
     final IntentFilter mIntentFilter;
     final Locator mLocator;
-    private boolean mScanEnabled;
+    private boolean mScanEnabled = false;
     private final FastPairCacheManager mFastPairCacheManager;
 
     private final BroadcastReceiver mScreenBroadcastReceiver = new BroadcastReceiver() {
@@ -229,10 +226,6 @@ public class FastPairManager {
 
         mLocatorContextWrapper.getContext().registerReceiver(mScreenBroadcastReceiver,
                 mIntentFilter, Context.RECEIVER_EXPORTED);
-
-        // Default false for now.
-        mScanEnabled = NearbyManager.getFastPairScanEnabled(mLocatorContextWrapper.getContext());
-        registerFastPairScanChangeContentObserver(mLocatorContextWrapper.getContentResolver());
     }
 
     /**
@@ -434,25 +427,6 @@ public class FastPairManager {
         }
     }
 
-    private void registerFastPairScanChangeContentObserver(ContentResolver resolver) {
-        mFastPairScanChangeContentObserver = new ContentObserver(ForegroundThread.getHandler()) {
-            @Override
-            public void onChange(boolean selfChange, Uri uri) {
-                super.onChange(selfChange, uri);
-                setScanEnabled(
-                        NearbyManager.getFastPairScanEnabled(mLocatorContextWrapper.getContext()));
-            }
-        };
-        try {
-            resolver.registerContentObserver(
-                    Settings.Secure.getUriFor(NearbyManager.FAST_PAIR_SCAN_ENABLED),
-                    /* notifyForDescendants= */ false,
-                    mFastPairScanChangeContentObserver);
-        } catch (SecurityException e) {
-            Log.e(TAG, "Failed to register content observer for fast pair scan.", e);
-        }
-    }
-
     /**
      * Processed task in a background thread
      */
@@ -480,13 +454,6 @@ public class FastPairManager {
         return (NearbyManager) mLocatorContextWrapper
                 .getApplicationContext().getSystemService(Context.NEARBY_SERVICE);
     }
-    private void setScanEnabled(boolean scanEnabled) {
-        if (mScanEnabled == scanEnabled) {
-            return;
-        }
-        mScanEnabled = scanEnabled;
-        invalidateScan();
-    }
 
     /**
      * Starts or stops scanning according to mAllowScan value.

nearby/tests/cts/fastpair/src/android/nearby/cts/NearbyManagerTest.java

@@ -165,15 +165,6 @@ public class NearbyManagerTest {
         mNearbyManager.stopBroadcast(callback);
     }
 
-    @Test
-    @SdkSuppress(minSdkVersion = 32, codeName = "T")
-    public void setFastPairScanEnabled() {
-        mNearbyManager.setFastPairScanEnabled(mContext, true);
-        assertThat(mNearbyManager.getFastPairScanEnabled(mContext)).isTrue();
-        mNearbyManager.setFastPairScanEnabled(mContext, false);
-        assertThat(mNearbyManager.getFastPairScanEnabled(mContext)).isFalse();
-    }
-
     @Test
     @SdkSuppress(minSdkVersion = Build.VERSION_CODES.UPSIDE_DOWN_CAKE)
     public void queryOffloadScanSupport() {