Update Material icons and key pressed state background

Bug: 16143083
Bug: 15678940
Bug: 15680164
Change-Id: I9f2527a8a536aab05d961e619e3940603024385c
diff --git a/java/res/values/keyboard-icons-lxx-dark.xml b/java/res/values/keyboard-icons-lxx-dark.xml
index b1549f2..15d267c 100644
--- a/java/res/values/keyboard-icons-lxx-dark.xml
+++ b/java/res/values/keyboard-icons-lxx-dark.xml
@@ -21,7 +21,6 @@
 <resources xmlns:android="http://schemas.android.com/apk/res/android">
     <style name="KeyboardIcons.LXX_Dark">
         <!-- Keyboard icons -->
-        <!-- TODO: Update those icons for LXX_Dark theme. -->
         <item name="iconShiftKey">@drawable/sym_keyboard_shift_lxx_dark</item>
         <item name="iconDeleteKey">@drawable/sym_keyboard_delete_lxx_dark</item>
         <item name="iconSettingsKey">@drawable/sym_keyboard_settings_lxx_dark</item>
@@ -33,14 +32,15 @@
         <item name="iconNextKey">@drawable/sym_keyboard_next_lxx_dark</item>
         <item name="iconDoneKey">@drawable/sym_keyboard_done_lxx_dark</item>
         <item name="iconPreviousKey">@drawable/sym_keyboard_previous_lxx_dark</item>
-        <item name="iconTabKey">@drawable/sym_keyboard_tab_holo_dark</item>
+        <item name="iconTabKey">@drawable/sym_keyboard_tab_lxx_dark</item>
         <item name="iconShortcutKey">@drawable/sym_keyboard_voice_lxx_dark</item>
+        <!-- TODO: Update this icon for LXX_Dark theme. -->
         <item name="iconSpaceKeyForNumberLayout">@drawable/sym_keyboard_space_holo_dark</item>
         <item name="iconShiftKeyShifted">@drawable/sym_keyboard_shift_locked_lxx_dark</item>
         <item name="iconShortcutKeyDisabled">@drawable/sym_keyboard_voice_off_lxx_dark</item>
         <item name="iconLanguageSwitchKey">@drawable/sym_keyboard_language_switch_lxx_dark</item>
-        <item name="iconZwnjKey">@drawable/sym_keyboard_zwnj_holo_dark</item>
-        <item name="iconZwjKey">@drawable/sym_keyboard_zwj_holo_dark</item>
+        <item name="iconZwnjKey">@drawable/sym_keyboard_zwnj_lxx_dark</item>
+        <item name="iconZwjKey">@drawable/sym_keyboard_zwj_lxx_dark</item>
         <item name="iconEmojiKey">@drawable/sym_keyboard_smiley_lxx_dark</item>
     </style>
 </resources>