Add Elevation to work switch

+ Switch font style to Google Sans

Bug: 155888857
Test: Manual
Change-Id: I0c289a9cdf559deebddcca08d51c1bd19c3ee4c1

res/layout/work_mode_switch.xml

@@ -17,7 +17,7 @@
     xmlns:android="http://schemas.android.com/apk/res/android"
     android:layout_width="match_parent"
     android:layout_height="wrap_content"
-    style="@style/PrimaryMediumText"
+    style="@style/PrimaryHeadline"
     android:id="@+id/work_mode_toggle"
     android:drawableStart="@drawable/ic_corp"
     android:drawablePadding="16dp"
@@ -25,6 +25,7 @@
     android:textColor="?attr/workProfileOverlayTextColor"
     android:layout_alignParentBottom="true"
     android:ellipsize="end"
+    android:elevation="10dp"
     android:gravity="start"
     android:lines="1"
     android:showText="false"

res/values/styles.xml

@@ -243,7 +243,6 @@
     <style name="DropTargetButton" parent="DropTargetButtonBase" />
 
     <style name="TextHeadline" parent="@android:style/TextAppearance.DeviceDefault.DialogWindowTitle" />
-    <style name="PrimaryMediumText" parent="@android:style/TextAppearance.DeviceDefault.Medium"/>
     <style name="PrimaryHeadline" parent="@android:style/TextAppearance.DeviceDefault.DialogWindowTitle"/>
 
     <style name="TextTitle" parent="@android:style/TextAppearance.DeviceDefault" />