Use NEAREST filtering for layers whenever possible.

Change-Id: Id5bee1bd4a322cf93e8000b08e18f1e1b058648e
diff --git a/libs/hwui/LayerCache.h b/libs/hwui/LayerCache.h
index d2d5f39..81b8bf3 100644
--- a/libs/hwui/LayerCache.h
+++ b/libs/hwui/LayerCache.h
@@ -119,7 +119,7 @@
         }
 
         LayerEntry(Layer* layer):
-            mLayer(layer), mWidth(layer->width), mHeight(layer->height) {
+            mLayer(layer), mWidth(layer->getWidth()), mHeight(layer->getHeight()) {
         }
 
         bool operator<(const LayerEntry& rhs) const {