Make ThemeAccentsUtils accessible to other packages

- Move our ThemeAccentsUtils class to the core/java/com/android/internal/statusbar
so we can call it from not only the SystemUI but other packages. This will
reduce the amount of code in packages like DU-Tweaks, Updater and Settings.

- Consolidate the code with our themes tile

Change-Id: Ia77d53802b73ac1157f3cc8ce5887a3e50555382

Author: Alex

core/java/com/android/internal/statusbar/ThemeAccentUtils.java

@@ -173,7 +173,7 @@ public static void unloadStockDarkTheme(IOverlayManager om, int userId) {
     public static boolean isUsingWhiteAccent(IOverlayManager om, int userId) {
         OverlayInfo themeInfo = null;
         try {
-            themeInfo = om.getOverlayInfo(ACCENTS[21],
+            themeInfo = om.getOverlayInfo(ACCENTS[26],
                     userId);
         } catch (RemoteException e) {
             e.printStackTrace();

packages/SystemUI/src/com/android/systemui/qs/tiles/ThemeTile.java

@@ -288,7 +288,7 @@ public void onItemClick(AdapterView<?> parent, View view, int position, long id)
 
     private ThemeTileItem getThemeItemForStyleMode() {
         if (ThemeAccentUtils.isUsingDarkTheme(mOverlayManager, mCurrentUserId)) {
-            return new ThemeTileItem(20, R.color.quick_settings_theme_tile_white,
+            return new ThemeTileItem(25, R.color.quick_settings_theme_tile_white,
                     R.string.quick_settings_theme_tile_color_white);
         } else {
             return new ThemeTileItem(20, R.color.quick_settings_theme_tile_black,

packages/SystemUI/src/com/android/systemui/statusbar/phone/StatusBar.java

@@ -243,6 +243,7 @@
 import com.android.systemui.statusbar.ScrimView;
 import com.android.systemui.statusbar.SignalClusterView;
 import com.android.systemui.statusbar.StatusBarState;
+import com.android.internal.statusbar.ThemeAccentUtils;
 import com.android.systemui.statusbar.notification.AboveShelfObserver;
 import com.android.systemui.statusbar.notification.InflationException;
 import com.android.systemui.statusbar.notification.RowInflaterTask;