Mac: Don't draw a cc::Surface while suspended

cc/output/output_surface.h

Index: cc/output/output_surface.h
diff --git a/cc/output/output_surface.h b/cc/output/output_surface.h
index 1d98bf725aeac21f440fc438ebfa874af6035866..423dc6317c37397664ceeeb336dd4109c0612902 100644
--- a/cc/output/output_surface.h
+++ b/cc/output/output_surface.h
@@ -156,6 +156,9 @@ class CC_EXPORT OutputSurface {
   // appropriate.
   virtual void SetWorkerContextShouldAggressivelyFreeResources(bool is_visible);
 
+  // If this returns true, then the surface will not attempt to draw.
+  virtual bool SurfaceIsSuspendForRecycle() const;
+
  protected:
   OutputSurfaceClient* client_;