Add ability to colorize status bar

Bug: 19233606
Change-Id: I756599395c202c4d0dd04c44beac706fc19bfe17
diff --git a/packages/SystemUI/res/values/ids.xml b/packages/SystemUI/res/values/ids.xml
index 68dc269..aa53a3e 100644
--- a/packages/SystemUI/res/values/ids.xml
+++ b/packages/SystemUI/res/values/ids.xml
@@ -40,5 +40,11 @@
     <item type="id" name="notification_power"/>
     <item type="id" name="notification_screenshot"/>
     <item type="id" name="notification_hidden"/>
+
+    <!-- Whether the icon is from a notification for which targetSdk < L -->
+    <item type="id" name="icon_is_pre_L"/>
+
+    <!-- For notification icons for which targetSdk < L, this caches whether the icon is grayscale -->
+    <item type="id" name="icon_is_grayscale" />
 </resources>