Refactor Emoji tab indicators to refer keyboard theme

Bug: 14419121
Change-Id: I7086923fff153039c2d011bbccbfd04eb687a76a
diff --git a/java/res/values/attrs.xml b/java/res/values/attrs.xml
index 80bb6f2..307ef13 100644
--- a/java/res/values/attrs.xml
+++ b/java/res/values/attrs.xml
@@ -30,6 +30,10 @@
         <attr name="keyPreviewTextViewStyle" format="reference"/>
         <!-- EmojiPalettesView style -->
         <attr name="emojiPalettesViewStyle" format="reference" />
+        <!-- TabWidget of EmojiPlettesView style -->
+        <attr name="emojiTabWidgetStyle" format="reference" />
+        <!-- EmojiCategoryPageIndicatorView style -->
+        <attr name="emojiCategoryPageIndicatorViewStyle" format="reference" />
         <!-- MoreKeysKeyboard style -->
         <attr name="moreKeysKeyboardStyle" format="reference" />
         <!-- MoreKeysKeyboardView style -->
@@ -181,6 +185,10 @@
         <attr name="iconEmojiCategory6Tab" format="reference" />
     </declare-styleable>
 
+    <declare-styleable name="EmojiCategoryPageIndicatorView">
+        <attr name="emojiCategoryPageIndicatorColor" format="color" />
+    </declare-styleable>
+
     <declare-styleable name="SuggestionStripView">
         <attr name="suggestionStripOptions" format="integer">
             <!-- This should be aligned with SuggestionStripLayoutHelper.AUTO_CORRECT_* and etc. -->