Refactor WebApkServiceConnectionManager.

chrome/android/webapk/shell_apk/src/org/chromium/webapk/shell_apk/IdentityService.java

Index: chrome/android/webapk/shell_apk/src/org/chromium/webapk/shell_apk/IdentityService.java
diff --git a/chrome/android/webapk/shell_apk/src/org/chromium/webapk/shell_apk/IdentityService.java b/chrome/android/webapk/shell_apk/src/org/chromium/webapk/shell_apk/IdentityService.java
new file mode 100644
index 0000000000000000000000000000000000000000..35aebae846df07cc361c4bc35029e7946036ef59
--- /dev/null
+++ b/chrome/android/webapk/shell_apk/src/org/chromium/webapk/shell_apk/IdentityService.java
@@ -0,0 +1,25 @@
+// 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.webapk.shell_apk;
+
+import android.app.Service;
+import android.content.Intent;
+import android.os.IBinder;
+
+import org.chromium.webapk.lib.common.IdentityService.IIdentityService;
+
+/** IdentityService allows browsers to commnicate with WebAPK, e.g querying its runtime host. */
+public class IdentityService extends Service {
+    private final IIdentityService.Stub mBinder = new IIdentityService.Stub() {
+        public String getRuntimeHostBrowserPackageName() {
+            return WebApkUtils.getHostBrowserPackageName(getApplicationContext());
+        }
+    };
+
+    @Override
+    public IBinder onBind(Intent intent) {
+        return mBinder;
+    }
+}