Async drawing!

Change-Id: I7e728356f58af88174328a8c0b90d27b128bfe01
diff --git a/libs/hwui/Android.mk b/libs/hwui/Android.mk
index 4de755d..52be531 100644
--- a/libs/hwui/Android.mk
+++ b/libs/hwui/Android.mk
@@ -54,6 +54,7 @@
 	# RenderThread stuff
 	LOCAL_SRC_FILES += \
 		renderthread/CanvasContext.cpp \
+		renderthread/DrawFrameTask.cpp \
 		renderthread/RenderProxy.cpp \
 		renderthread/RenderTask.cpp \
 		renderthread/RenderThread.cpp