For #23121 - Replace @drawble/ic_chevron_down with @drawable/mozac_ic_arrowhead_down

app/src/main/res/drawable/ic_chevron.xml

@@ -4,5 +4,5 @@
    - file, You can obtain one at http://mozilla.org/MPL/2.0/. -->
 <selector xmlns:android="http://schemas.android.com/apk/res/android" android:constantSize="true">
     <item android:drawable="@drawable/ic_chevron_up" android:state_activated="true" />
-    <item android:drawable="@drawable/ic_chevron_down" />
+    <item android:drawable="@drawable/mozac_ic_arrowhead_down" />
 </selector>

app/src/main/res/drawable/ic_chevron_down.xml

@@ -1,12 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!-- This Source Code Form is subject to the terms of the Mozilla Public
-   - License, v. 2.0. If a copy of the MPL was not distributed with this
-   - file, You can obtain one at http://mozilla.org/MPL/2.0/. -->
-<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="?primaryText"
-          android:pathData="M12 14.289L5.28 7.57a0.75 0.75 0 1 0-1.061 1.061l7.37 7.37h0.821l7.37-7.37a0.748 0.748 0 0 0 0-1.061 0.75 0.75 0 0 0-1.061 0L12 14.289z"/>
-</vector>