Adds LockScreen SafetySource and SafetySource broadcast receivers.

Adds a basic LockScreen SafetySource with placeholder data.
Adds a no-op Biometric SafetySource.
Adds Broadcast Receiver and responds with data.

Test: atest SettingsUnitTests
Bug: 215516488
Bug: 215515448
Change-Id: I753a10f63fc73984c7ff96347b927bb2ca5a0aba

src/com/android/settings/safetycenter/SafetySourceBroadcastReceiver.java

@@ -0,0 +1,47 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.settings.safetycenter;
+
+import static android.safetycenter.SafetyCenterManager.EXTRA_REFRESH_SAFETY_SOURCE_IDS;
+
+import android.content.BroadcastReceiver;
+import android.content.Context;
+import android.content.Intent;
+
+import com.google.common.collect.ImmutableList;
+
+/** Broadcast receiver for handling requests from Safety Center for fresh data. */
+public class SafetySourceBroadcastReceiver extends BroadcastReceiver {
+
+    @Override
+    public void onReceive(Context context, Intent intent) {
+        if (!SafetyCenterStatusHolder.get().isEnabled(context)) {
+            return;
+        }
+
+        ImmutableList<String> sourceIds =
+                ImmutableList.copyOf(intent.getStringArrayExtra(EXTRA_REFRESH_SAFETY_SOURCE_IDS));
+
+        if (sourceIds.contains(LockScreenSafetySource.SAFETY_SOURCE_ID)) {
+            LockScreenSafetySource.sendSafetyData(context);
+        }
+
+        if (sourceIds.contains(BiometricsSafetySource.SAFETY_SOURCE_ID)) {
+            BiometricsSafetySource.sendSafetyData(context);
+        }
+    }
+}