Update theme icon packs.

Mostly Settings, framework permission group icons and some SystemUI
volume dialog icons.

Bug: 129677355
Bug: 128354921
Test: make; install all overlays and change themes
Change-Id: I7099a050c6e4521e54fd258126e800dab3f66c3e
diff --git a/packages/overlays/IconPackRoundedSettingsOverlay/res/drawable/ic_add_24dp.xml b/packages/overlays/IconPackRoundedSettingsOverlay/res/drawable/ic_add_24dp.xml
new file mode 100644
index 0000000..1ad2034
--- /dev/null
+++ b/packages/overlays/IconPackRoundedSettingsOverlay/res/drawable/ic_add_24dp.xml
@@ -0,0 +1,20 @@
+
+<!--
+   Copyright (C) 2019 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 android:height="24dp" android:tint="?android:attr/colorControlNormal" android:viewportHeight="24" android:viewportWidth="24" android:width="24dp" xmlns:android="http://schemas.android.com/apk/res/android">
+  <path android:fillColor="@android:color/white" android:pathData="M4.67,12.75h6.58v6.58C11.25,19.7,11.59,20,12,20s0.75-0.3,0.75-0.67v-6.58h6.58C19.7,12.75,20,12.41,20,12 s-0.3-0.75-0.67-0.75h-6.58V4.67C12.75,4.3,12.41,4,12,4s-0.75,0.3-0.75,0.67v6.58H4.67C4.3,11.25,4,11.59,4,12 S4.3,12.75,4.67,12.75z"/>
+</vector>
\ No newline at end of file