Track Looper decoupling from ALooper

Change-Id: I83d1f5f6600019268c53706b7bf6d94b84931e18
diff --git a/libs/hwui/renderthread/RenderThread.cpp b/libs/hwui/renderthread/RenderThread.cpp
index 18d9300..bccd6e6 100644
--- a/libs/hwui/renderthread/RenderThread.cpp
+++ b/libs/hwui/renderthread/RenderThread.cpp
@@ -39,7 +39,7 @@
 bool RenderThread::threadLoop() {
     for (;;) {
         int result = mLooper->pollAll(-1);
-        if (result == ALOOPER_POLL_ERROR) {
+        if (result == Looper::POLL_ERROR) {
             // TODO Something?
             break;
         }