core/res/res/drawable/progress_indeterminate_small.xml

<?xml version="1.0" encoding="utf-8"?>
<!--
/* //device/apps/common/res/drawable/progress.xml
**
** Copyright 2007, The Android Open Source Project
**
** Licensed under the Apache License, Version 2.0 (the "License"); 
** you may not use this file except in compliance with the License. 
** You may obtain a copy of the License at 
**
**     http://www.apache.org/licenses/LICENSE-2.0 
**
** Unless required by applicable law or agreed to in writing, software 
** distributed under the License is distributed on an "AS IS" BASIS, 
** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
** See the License for the specific language governing permissions and 
** limitations under the License.
*/
-->

<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
    <item
        android:drawable="@android:drawable/progress_circular_background_small" />

    <item><rotate
        android:pivotX="50%"
        android:pivotY="50%"
        android:fromDegrees="0"
        android:toDegrees="360"
        android:drawable="@android:drawable/progress_circular_indeterminate_small" />
    </item>
</layer-list>