From 0e338d5b31376aee36f4edeb72a31714eb5cf817 Mon Sep 17 00:00:00 2001
From: Patrick Walton <pcwalton@mimiga.net>
Date: Tue, 29 Nov 2016 17:44:31 -0800
Subject: [PATCH] layout_thread: Log reflows that happen due to animation ticks
 if `-Z relayout-event` is on.

---
 components/layout_thread/lib.rs | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/components/layout_thread/lib.rs b/components/layout_thread/lib.rs
index 961abb7416b..7ae942361ed 100644
--- a/components/layout_thread/lib.rs
+++ b/components/layout_thread/lib.rs
@@ -1282,6 +1282,10 @@ impl LayoutThread {
     }
 
     fn tick_animations(&mut self, rw_data: &mut LayoutThreadData) {
+        if opts::get().relayout_event {
+            println!("**** pipeline={}\tForDisplay\tSpecial\tAnimationTick", self.id);
+        }
+
         let reflow_info = Reflow {
             goal: ReflowGoal::ForDisplay,
             page_clip_rect: max_rect(),