Add an Android sample app for Telemetry tests.

tools/android/push_apps_to_background/AndroidManifest.xml

Index: tools/android/push_apps_to_background/AndroidManifest.xml
diff --git a/tools/android/push_apps_to_background/AndroidManifest.xml b/tools/android/push_apps_to_background/AndroidManifest.xml
new file mode 100644
index 0000000000000000000000000000000000000000..92753f3c7609bc52c1cc7ab5228d83b99d62371a
--- /dev/null
+++ b/tools/android/push_apps_to_background/AndroidManifest.xml
@@ -0,0 +1,29 @@
+<!--
+ * Copyright 2016 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.push_apps_to_background"
+    android:versionCode="1"
+    android:versionName="1.0" >
+
+    <uses-sdk android:minSdkVersion="16" android:targetSdkVersion="23" />
+
+    <application
+        android:icon="@drawable/ic_launcher"
+        android:label="@string/app_name"
+        android:theme="@android:style/Theme.Light" >
+        <activity
+            android:name="org.chromium.push_apps_to_background.PushAppsToBackgroundActivity"
+            android:label="@string/title_activity_push_apps_to_background"
+            android:exported="true">
+        <intent-filter>
+            <action android:name="android.intent.action.MAIN" />
+            <category android:name="android.intent.category.LAUNCHER" />
+        </intent-filter>
+        </activity>
+    </application>
+</manifest>