Bag of scheduling tweaks

 Bug: 15118640

 * Prevent over-stuffing the queue by dropping frames
 * Prevent double-drawing in one pulse by RT by deferring
   vsync registration until post-draw so that it catches
   the next vsync pulse instead of the current one
 * Bias vsync race condition towards the UI thread
 * Fix queueDelay to actually work

Change-Id: Ibf584258bd93ebcbba058bd976dc8b307f1c6155
diff --git a/core/java/android/view/ThreadedRenderer.java b/core/java/android/view/ThreadedRenderer.java
index 704d516..8417887 100644
--- a/core/java/android/view/ThreadedRenderer.java
+++ b/core/java/android/view/ThreadedRenderer.java
@@ -291,6 +291,11 @@
     }
 
     @Override
+    public void notifyFramePending() {
+        nNotifyFramePending(mNativeProxy);
+    }
+
+    @Override
     protected void finalize() throws Throwable {
         try {
             nDeleteProxy(mNativeProxy);
@@ -364,4 +369,5 @@
     private static native void nDestroyLayer(long nativeProxy, long layer);
 
     private static native void nFence(long nativeProxy);
+    private static native void nNotifyFramePending(long nativeProxy);
 }