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">
 
+    <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"/>
+
     <application android:name="org.chromium.chromecast.shell.CastApplication"
                  android:icon="@mipmap/app_icon"
                  android:label="@string/app_name">
         <activity android:name="org.chromium.chromecast.shell.CastShellActivity"
                   android:theme="@style/CastShellTheme"
                   android:exported="true"
                   android:hardwareAccelerated="true"
                   android:taskAffinity=".CastShellActivity"
                   android:configChanges="orientation|keyboardHidden|keyboard|screenSize"
                   android:excludeFromRecents="true"
@@ skipping 20 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-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>