Currently we only composite fixed position elements if we are on High DPI devices. This fix allows …

LayoutTests/compositing/rtl/rtl-fixed-overflow-scrolled.html

Index: LayoutTests/compositing/rtl/rtl-fixed-overflow-scrolled.html
diff --git a/LayoutTests/compositing/rtl/rtl-fixed-overflow-scrolled.html b/LayoutTests/compositing/rtl/rtl-fixed-overflow-scrolled.html
index cd6faa4ca956c524e29fba028b1d12a3972b9798..e1bf825e1358396094837619460f4363441464e5 100644
--- a/LayoutTests/compositing/rtl/rtl-fixed-overflow-scrolled.html
+++ b/LayoutTests/compositing/rtl/rtl-fixed-overflow-scrolled.html
@@ -17,11 +17,10 @@
     }
 
     .indicator {
-        background-color: red;
+        background-color: rgba(255, 0, 0, 0.99);
     }
 
     .layer {
-        transform:translateZ(0);
         background-color: green;
     }