Consolidate attributes to EmojiPaletteView to control indicators

This CL consolidates attributes of EmojiTabWidget and
EmojiCategoryPageIndicatorView with EmojiPaletteView.

Bug: 15151483
Change-Id: I6eca10b60e894d945080ef3f88523d539a4992fa
diff --git a/java/res/values/attrs.xml b/java/res/values/attrs.xml
index 307ef13..775a90c 100644
--- a/java/res/values/attrs.xml
+++ b/java/res/values/attrs.xml
@@ -30,10 +30,6 @@
         <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 -->
@@ -176,6 +172,11 @@
     </declare-styleable>
 
     <declare-styleable name="EmojiPalettesView">
+        <attr name="categoryIndicatorEnabled" format="boolean" />
+        <attr name="categoryIndicatorDrawable" format="reference" />
+        <attr name="categoryIndicatorBackground" format="reference" />
+        <attr name="categoryPageIndicatorColor" format="color" />
+        <attr name="categoryPageIndicatorBackground" format="color" />
         <attr name="iconEmojiRecentsTab" format="reference" />
         <attr name="iconEmojiCategory1Tab" format="reference" />
         <attr name="iconEmojiCategory2Tab" format="reference" />
@@ -185,10 +186,6 @@
         <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. -->