GN: Fix remoting_test_apk compile when is_chrome_branded=true

remoting/android/javatests/AndroidManifest.xml.jinja2

 <?xml version="1.0" encoding="utf-8"?>
   <!-- Copyright 2013 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 name must be unique so suffix with "tests" so package loader
        doesn't ignore this. -->
   <manifest xmlns:android="http://schemas.android.com/apk/res/android"
-      package="org.chromium.chromoting.tests">
+      package="{{ APK_PACKAGE_NAME }}.tests">
     <!-- We add an application tag here just so that we can indicate that this
          package needs to link against the android.test library, which is
          needed when building test cases. -->
     <uses-sdk android:minSdkVersion="14" android:targetSdkVersion="23" />
     <uses-permission android:name="android.permission.RUN_INSTRUMENTATION" />
     <application>
         <uses-library android:name="android.test.runner" />
     </application>
     <instrumentation android:name="android.test.InstrumentationTestRunner"
-        android:targetPackage="org.chromium.chromoting"
-        android:label="Tests for org.chromium.chromoting"/>
+        android:targetPackage="{{ APK_PACKAGE_NAME }}"
+        android:label="Tests for {{ APK_PACKAGE_NAME }}"/>
 </manifest>