Enable asynchronous RenderThread for WebView

BUG: 12179257

Change-Id: Ib7358dc84a0a58020d178d10b324b9631848c06d
diff --git a/libs/hwui/renderthread/DrawFrameTask.cpp b/libs/hwui/renderthread/DrawFrameTask.cpp
index 797566f..48abbf2 100644
--- a/libs/hwui/renderthread/DrawFrameTask.cpp
+++ b/libs/hwui/renderthread/DrawFrameTask.cpp
@@ -138,7 +138,7 @@
         }
     }
     // If prepareTextures is false, we ran out of texture cache space
-    return !info.out.hasFunctors && info.prepareTextures;
+    return info.prepareTextures;
 }
 
 void DrawFrameTask::unblockUiThread() {