Add progress bar for Privacy screen

We show up top linear progress bar
when Settings is querying permission usage data.

Test: visual, robotest
Fixes: 123539793
Change-Id: I350068856d1708eb054d2a205d9ca857214891ce

tests/robotests/src/com/android/settings/testutils/shadow/ShadowPermissionControllerManager.java

@@ -0,0 +1,44 @@
+/*
+ * Copyright (C) 2019 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.testutils.shadow;
+
+import android.annotation.CallbackExecutor;
+import android.content.Context;
+import android.permission.PermissionControllerManager;
+
+import androidx.annotation.NonNull;
+
+import org.robolectric.annotation.Implementation;
+import org.robolectric.annotation.Implements;
+
+import java.util.concurrent.Executor;
+
+@Implements(PermissionControllerManager.class)
+public class ShadowPermissionControllerManager {
+
+    protected void __constructor__(Context context) {
+        // no nothing, everything is shadowed
+    }
+
+    @Implementation
+    public void getPermissionUsages(boolean countSystem, long numMillis,
+            @NonNull @CallbackExecutor Executor executor,
+            @NonNull PermissionControllerManager.OnPermissionUsageResultCallback callback) {
+
+        // Do nothing
+    }
+}