Use Nearby to background scan for URLs

chrome/android/java/src/org/chromium/chrome/browser/physicalweb/NearbyMessageIntentService.java

Index: chrome/android/java/src/org/chromium/chrome/browser/physicalweb/NearbyMessageIntentService.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/physicalweb/NearbyMessageIntentService.java b/chrome/android/java/src/org/chromium/chrome/browser/physicalweb/NearbyMessageIntentService.java
new file mode 100644
index 0000000000000000000000000000000000000000..71a9c90c6b86bdc44a34c3be000eab709cfacb54
--- /dev/null
+++ b/chrome/android/java/src/org/chromium/chrome/browser/physicalweb/NearbyMessageIntentService.java
@@ -0,0 +1,45 @@
+// Copyright 2015 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.physicalweb;
+
+import android.app.IntentService;
+import android.content.Intent;
+
+import com.google.android.gms.nearby.Nearby;
+import com.google.android.gms.nearby.messages.Message;
+import com.google.android.gms.nearby.messages.MessageListener;
+
+/**
+ * Service that handles intents from Nearby.
+ */
+public class NearbyMessageIntentService extends IntentService {
+    private static final MessageListener MESSAGE_LISTENER = new MessageListener() {
+        @Override
+        public void onFound(Message message) {
+            String url = PhysicalWebBleClient.getInstance().getUrlFromMessage(message);
+            if (url != null) {
+                UrlManager.getInstance().addUrl(url);
+            }
+        }
+
+        @Override
+        public void onLost(Message message) {
+            String url = PhysicalWebBleClient.getInstance().getUrlFromMessage(message);
+            if (url != null) {
+                UrlManager.getInstance().removeUrl(url);
+            }
+        }
+    };
+
+    public NearbyMessageIntentService() {
+        super(NearbyMessageIntentService.class.getSimpleName());
+        setIntentRedelivery(true);
+    }
+
+    @Override
+    protected void onHandleIntent(Intent intent) {
+        Nearby.Messages.handleIntent(intent, MESSAGE_LISTENER);
+    }
+}