Add ZWNJ and ZWJ icons

Bug: 5456620
Change-Id: I7238f41c841803746ca2ab6cd332b2be8498a3ee
diff --git a/java/res/values/keyboard-icons-black.xml b/java/res/values/keyboard-icons-black.xml
index 44fc2b9..1ff597a 100644
--- a/java/res/values/keyboard-icons-black.xml
+++ b/java/res/values/keyboard-icons-black.xml
@@ -36,5 +36,8 @@
         <item name="iconPreviewTabKey">@drawable/sym_keyboard_feedback_tab</item>
         <!-- TODO: Needs dedicated black theme globe icon -->
         <item name="iconLanguageSwitchKey">@drawable/sym_keyboard_language_switch</item>
+        <!-- TODO: Needs dedicated black theme ZWNJ and ZWJ icons -->
+        <item name="iconZwnjKey">@drawable/sym_keyboard_zwnj_holo</item>
+        <item name="iconZwjKey">@drawable/sym_keyboard_zwj_holo</item>
     </style>
 </resources>