Restore buildLayer()'s old behavior; it's synchronous again
Bug #9193833

Change-Id: I4ee07e65c0a8967f0b55da030ecaad6dfc46136f
diff --git a/libs/hwui/OpenGLRenderer.h b/libs/hwui/OpenGLRenderer.h
index ce4ce42..1ab493c 100644
--- a/libs/hwui/OpenGLRenderer.h
+++ b/libs/hwui/OpenGLRenderer.h
@@ -208,6 +208,7 @@
 
     ANDROID_API void pushLayerUpdate(Layer* layer);
     ANDROID_API void clearLayerUpdates();
+    ANDROID_API void flushLayerUpdates();
 
     ANDROID_API int getSaveCount() const;
     virtual int save(int flags);