Remove almost-all android::Singleton users

Bug: 25426213
Change-Id: I88e6206e8915cce95c3a8a8a82a4bb8fbf668141
diff --git a/libs/hwui/Caches.cpp b/libs/hwui/Caches.cpp
index 7c63e31..94a11f1 100644
--- a/libs/hwui/Caches.cpp
+++ b/libs/hwui/Caches.cpp
@@ -23,6 +23,7 @@
 #include "ShadowTessellator.h"
 #include "utils/GLUtils.h"
 
+#include <cutils/properties.h>
 #include <utils/Log.h>
 #include <utils/String8.h>