For 3687 Use Metropolis Font for Header

app/src/main/res/font/metropolis.xml

+<?xml version="1.0" encoding="utf-8"?>
+<font-family xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto">
+
+    <!-- Black -->
+    <font
+        android:font="@font/metropolis_black"
+        android:fontStyle="normal"
+        android:fontWeight="900"
+        app:font="@font/metropolis_black"
+        app:fontStyle="normal"
+        app:fontWeight="900" />
+
+    <!-- Extra Bold -->
+    <font
+        android:font="@font/metropolis_extrabold"
+        android:fontStyle="normal"
+        android:fontWeight="800"
+        app:font="@font/metropolis_extrabold"
+        app:fontStyle="normal"
+        app:fontWeight="800" />
+
+    <!-- Bold -->
+    <font
+        android:font="@font/metropolis_bold"
+        android:fontStyle="normal"
+        android:fontWeight="700"
+        app:font="@font/metropolis_bold"
+        app:fontStyle="normal"
+        app:fontWeight="700" />
+
+    <!-- Semi-Bold -->
+    <font
+        android:font="@font/metropolis_semibold"
+        android:fontStyle="normal"
+        android:fontWeight="600"
+        app:font="@font/metropolis_semibold"
+        app:fontStyle="normal"
+        app:fontWeight="600" />
+
+    <!-- Medium -->
+    <font
+        android:font="@font/metropolis_medium"
+        android:fontStyle="normal"
+        android:fontWeight="500"
+        app:font="@font/metropolis_medium"
+        app:fontStyle="normal"
+        app:fontWeight="500" />
+
+    <!-- Normal -->
+    <font
+        android:font="@font/metropolis_regular"
+        android:fontStyle="normal"
+        android:fontWeight="400"
+        app:font="@font/metropolis_regular"
+        app:fontStyle="normal"
+        app:fontWeight="400" />
+
+    <!-- Thin -->
+    <font
+        android:font="@font/metropolis_thin"
+        android:fontStyle="normal"
+        android:fontWeight="200"
+        app:font="@font/metropolis_thin"
+        app:fontStyle="normal"
+        app:fontWeight="200" />
+
+    <!-- Light -->
+    <font
+        android:font="@font/metropolis_light"
+        android:fontStyle="normal"
+        android:fontWeight="100"
+        app:font="@font/metropolis_light"
+        app:fontStyle="normal"
+        app:fontWeight="100" />
+
+</font-family>
\ No newline at end of file

app/src/main/res/layout/account_preference.xml

@@ -2,6 +2,7 @@
    - 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/. -->
 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
     android:id="@+id/account_preference_background"
     android:layout_width="match_parent"
     android:layout_height="wrap_content"
@@ -47,7 +48,8 @@
             android:layout_alignStart="@id/displayName"
             android:maxLines="4"
             android:text="@string/preferences_account_default_name"
-            android:textColor="?primaryText" />
+            android:textColor="?primaryText"
+            app:fontFamily="@font/metropolis_bold" />
 
     </RelativeLayout>