Implement privacy disclosure for an unbound webapk.

chrome/android/java/src/org/chromium/chrome/browser/webapps/WebApkDisclosureNotificationManager.java

Index: chrome/android/java/src/org/chromium/chrome/browser/webapps/WebApkDisclosureNotificationManager.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/webapps/WebApkDisclosureNotificationManager.java b/chrome/android/java/src/org/chromium/chrome/browser/webapps/WebApkDisclosureNotificationManager.java
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index 0000000000000000000000000000000000000000..13b8b7aef808e6473633ecbad1e4dfb099c19529
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+++ b/chrome/android/java/src/org/chromium/chrome/browser/webapps/WebApkDisclosureNotificationManager.java
@@ -0,0 +1,64 @@
+// Copyright 2017 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+package org.chromium.chrome.browser.webapps;
+
+import android.app.Notification;
+import android.content.Context;
+import android.graphics.BitmapFactory;
+
+import org.chromium.base.ContextUtils;
+import org.chromium.chrome.R;
+import org.chromium.chrome.browser.notifications.NotificationUmaTracker;
+import org.chromium.chrome.browser.notifications.StandardNotificationBuilder;
+import org.chromium.chrome.browser.notifications.WebApkNotificationClient;
+import org.chromium.chrome.browser.notifications.channels.ChannelDefinitions;
+
+import java.util.Random;
+
+/**
+ * Manages the notification indicating that a WebApk is backed by chrome code and may share data.
+ */
+public class WebApkDisclosureNotificationManager {
+    private static final String WEBAPK_OPEN_TAG = "webapk_notification";
+
+    /**
+     * Shows the privacy disclosure informing the user that Chrome is being used.
+     * @param webappInfo Web App this is currently displayed fullscreen.
+     * @return identifier used to display the notification
+     */
+    public static int showDisclosure(WebappInfo webappInfo) {
+        Context context = ContextUtils.getApplicationContext();
+        String title = webappInfo.shortName();
+
+        StandardNotificationBuilder builder =
+                new StandardNotificationBuilder(context, ChannelDefinitions.CHANNEL_ID_BROWSER);
+        builder.setTitle(title)
+                .setPriority(Notification.PRIORITY_MIN)
+                .setLargeIcon(BitmapFactory.decodeResource(
+                        context.getResources(), R.drawable.ic_launcher))
+                .setDeleteIntent(WebApkDisclosureNotificationService.getDeleteIntent(
+                        context, webappInfo.id()))
+                .setBody(context.getResources().getString(
+                        R.string.webapk_running_in_chrome_disclosure, title));
+
+        int id = (new Random()).nextInt();
+        WebApkNotificationClient.notifyNotification(
+                webappInfo.webApkPackageName(), builder, WEBAPK_OPEN_TAG, id);
+        // Even though the Notification is shown via the WebApk, we still want to record UMA.
+        NotificationUmaTracker.getInstance().onNotificationShown(
+                NotificationUmaTracker.WEBAPK, ChannelDefinitions.CHANNEL_ID_BROWSER);
+        return id;
+    }
+
+    /**
+     * Dismisses the notification.
+     * @param webappInfo Web App this is currently displayed fullscreen.
+     * @param id The identifier for the tag to dismiss.
+     */
+    public static void dismissNotification(WebappInfo webappInfo, int id) {
+        WebApkNotificationClient.cancelNotification(
+                webappInfo.webApkPackageName(), WEBAPK_OPEN_TAG, id);
+    }
+}