Chromecast: fix Android lint warnings, which are now build errors.

chromecast/browser/android/apk/AndroidManifest.xml.jinja2

 <?xml version="1.0" encoding="utf-8"?>
 
 <!-- Copyright 2014 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.
  -->
 
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
           package="org.chromium.chromecast.shell">
 
@@ skipping 30 matching lines @@
         <meta-data android:name="org.chromium.content.browser.NUM_PRIVILEGED_SERVICES"
                    android:value="{{ num_privileged_services }}"/>
         {% for i in range(num_privileged_services) %}
         <service android:name="org.chromium.content.app.PrivilegedProcessService{{ i }}"
                  android:process=":privileged_process{{ i }}"
                  android:isolatedProcess="false"
                  android:exported="false" />
         {% endfor %}
     </application>
 
-    <uses-sdk android:minSdkVersion="19" android:targetSdkVersion="19" />
+    <uses-sdk android:minSdkVersion="21" android:targetSdkVersion="22" />
     <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
     <uses-permission android:name="android.permission.INTERNET"/>
     <uses-permission android:name="android.permission.SYSTEM_ALERT_WINDOW"/>
     <uses-permission android:name="android.permission.WAKE_LOCK"/>
 
 </manifest>