Remove outdated part about Chrome download, fix #1338
diff --git a/HACKING.md b/HACKING.md
index 086940b..bd6fec7 100644
--- a/HACKING.md
+++ b/HACKING.md
@@ -109,17 +109,9 @@
## Testing performance impact of changes
-If you have a Chrome build handy, it's a good test case. Otherwise,
-[the github downoads page](https://github.com/ninja-build/ninja/releases)
-has a copy of the Chrome build files (and depfiles). You can untar
-that, then run
-
- path/to/my/ninja chrome
-
-and compare that against a baseline Ninja.
-
-There's a script at `misc/measure.py` that repeatedly runs a command like
-the above (to address variance) and summarizes its runtime. E.g.
+If you have a Chrome build handy, it's a good test case. There's a
+script at `misc/measure.py` that repeatedly runs a command (to address
+variance) and summarizes its runtime. E.g.
path/to/misc/measure.py path/to/my/ninja chrome
