Roll WebXR sample repo

Roll the WebXR sample repo to pick up a framebuffer scale fix.

TBR=bajones@chromium.org

Bug: 853400
Change-Id: Ic6880944037ace9fed199e647c04708aec0851af
Reviewed-on: https://chromium-review.googlesource.com/1123642Reviewed-by: Brian Sheedy <bsheedy@chromium.org>
Commit-Queue: Brian Sheedy <bsheedy@chromium.org>
Cr-Commit-Position: refs/heads/master@{#572077}

DEPS

@@ -260,7 +260,7 @@ deps = {
     Var('chromium_git') + '/external/github.com/toji/webvr.info.git' + '@' + 'c58ae99b9ff9e2aa4c524633519570bf33536248',
 
   'src/chrome/test/data/vr/webxr_samples':
-    Var('chromium_git') + '/external/github.com/immersive-web/webxr-samples.git' + '@' + '18652a69be2092f2c35a3f91213abc8b80dd3f25',
+    Var('chromium_git') + '/external/github.com/immersive-web/webxr-samples.git' + '@' + 'cf02f19c4ff6894705a9407722ab52551e010c60',
 
   'src/ios/third_party/earl_grey/src': {
       'url': Var('chromium_git') + '/external/github.com/google/EarlGrey.git' + '@' + '91c27bb8a15e723df974f620f7f576a30a6a7484',