Fix delete button with different tint color

Before: https://screenshot.googleplex.com/pxfrg1SPtKY.png
After:
https://screenshot.googleplex.com/Jy0fY2RLAMt.png
https://screenshot.googleplex.com/JRhMymkrPhm.png

Test: Manually
Change-Id: I5931ca45b2e96557cef4f9dec2b4aadc9fd7909b
diff --git a/res/drawable/ic_delete_24px.xml b/res/drawable/ic_delete_24px.xml
index bc83f36..f82e18d 100644
--- a/res/drawable/ic_delete_24px.xml
+++ b/res/drawable/ic_delete_24px.xml
@@ -19,12 +19,12 @@
     android:viewportWidth="24"
     android:viewportHeight="24">
   <path
-      android:fillColor="@android:color/white"
+      android:fillColor="#FF000000"
       android:pathData="M15,4V3H9v1H4v2h1v13c0,1.1 0.9,2 2,2h10c1.1,0 2,-0.9 2,-2V6h1V4H15zM17,19H7V6h10V19z"/>
   <path
-      android:fillColor="@android:color/white"
+      android:fillColor="#FF000000"
       android:pathData="M9,8h2v9h-2z"/>
   <path
-      android:fillColor="@android:color/white"
+      android:fillColor="#FF000000"
       android:pathData="M13,8h2v9h-2z"/>
 </vector>