Make RenderNodeAnimator and WebView play nice

Change-Id: Ifaefcf510b2d377663fc86f60608d6ec9be8329a
diff --git a/libs/hwui/renderthread/RenderProxy.cpp b/libs/hwui/renderthread/RenderProxy.cpp
index 7b7c019..31bb61a 100644
--- a/libs/hwui/renderthread/RenderProxy.cpp
+++ b/libs/hwui/renderthread/RenderProxy.cpp
@@ -146,10 +146,10 @@
     post(task);
 }
 
-void RenderProxy::syncAndDrawFrame(nsecs_t frameTimeNanos,
+int RenderProxy::syncAndDrawFrame(nsecs_t frameTimeNanos,
         int dirtyLeft, int dirtyTop, int dirtyRight, int dirtyBottom) {
     mDrawFrameTask.setDirty(dirtyLeft, dirtyTop, dirtyRight, dirtyBottom);
-    mDrawFrameTask.drawFrame(frameTimeNanos);
+    return mDrawFrameTask.drawFrame(frameTimeNanos);
 }
 
 CREATE_BRIDGE1(destroyCanvasAndSurface, CanvasContext* context) {