chromium/android_webview/nonembedded/java/res_devui/drawable/blue_circle.xml

<?xml version="1.0" encoding="utf-8"?>
<shape
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/blue_circle"
    android:shape="oval">
    <solid android:color="@color/blue"/>
    <size
        android:width="10dp"
        android:height="10dp"/>
</shape>