Notification history UI buff

Fixes: 182155974
Test: visual test
Change-Id: I028381407504b3cf390987a6fa11c041fddf6198

res/drawable/circle.xml

@@ -0,0 +1,27 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~ Copyright (C) 2021 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.
+  -->
+
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24">
+
+    <path
+        android:fillColor="#FFFFFF"
+        android:pathData="M 12 0 C 18.627416998 0 24 5.37258300203 24 12 C 24 18.627416998 18.627416998 24 12 24 C 5.37258300203 24 0 18.627416998 0 12 C 0 5.37258300203 5.37258300203 0 12 0 Z" />
+</vector>