Re-jigger layers

 Bug: 15185239
 Bug: 15238382

 Make DeferredLayerUpdater ref counted so that
 HardwareLayer:finalizer() works non-crashily on
 leaked layers
 Give DeferredLayerUpdater the ability to have a layer destroyer
 set so that leaked layers can still be recycled on the
 RenderThread
 Order layer updates based off of pushLayerUpdate() calls to fix
 issue with nested layers

Change-Id: I4449cee607f7e5126e02fed7464cf48038e3dfdf
diff --git a/core/java/android/view/ThreadedRenderer.java b/core/java/android/view/ThreadedRenderer.java
index cac23a8..11db996 100644
--- a/core/java/android/view/ThreadedRenderer.java
+++ b/core/java/android/view/ThreadedRenderer.java
@@ -294,12 +294,7 @@
 
     @Override
     void pushLayerUpdate(HardwareLayer layer) {
-        // TODO: Remove this, it's not needed outside of GLRenderer
-    }
-
-    @Override
-    void onLayerCreated(HardwareLayer layer) {
-        // TODO: Is this actually useful?
+        nPushLayerUpdate(mNativeProxy, layer.getDeferredLayerUpdater());
     }
 
     @Override
@@ -309,7 +304,7 @@
 
     @Override
     void onLayerDestroyed(HardwareLayer layer) {
-        nDestroyLayer(mNativeProxy, layer.getDeferredLayerUpdater());
+        nCancelLayerUpdate(mNativeProxy, layer.getDeferredLayerUpdater());
     }
 
     @Override
@@ -398,7 +393,8 @@
     private static native long nCreateDisplayListLayer(long nativeProxy, int width, int height);
     private static native long nCreateTextureLayer(long nativeProxy);
     private static native boolean nCopyLayerInto(long nativeProxy, long layer, long bitmap);
-    private static native void nDestroyLayer(long nativeProxy, long layer);
+    private static native void nPushLayerUpdate(long nativeProxy, long layer);
+    private static native void nCancelLayerUpdate(long nativeProxy, long layer);
 
     private static native void nFlushCaches(long nativeProxy, int flushMode);