manifest: add apitrace checkout

BUG=chromium:1031692
TEST=None
Cq-Depend: chrome-internal:2281926
Change-Id: I28c9cde07e6ab6eec927270ef0887e94d053f4a9
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/manifest/+/1956129Tested-by: Po-Hsien Wang <pwang@chromium.org>
Reviewed-by: Mike Frysinger <vapier@chromium.org>
Reviewed-by: Ilja H. Friedel <ihf@chromium.org>
Reviewed-by: David Riley <davidriley@chromium.org>
Commit-Queue: Po-Hsien Wang <pwang@chromium.org>
Auto-Submit: Po-Hsien Wang <pwang@chromium.org>

full.xml

@@ -203,6 +203,8 @@ Your sources have been sync'd successfully.
            name="chromiumos/third_party/adhd"/>
   <project path="src/third_party/arm-trusted-firmware"
            name="chromiumos/third_party/arm-trusted-firmware" />
+  <project path="src/third_party/apitrace"
+           name="chromiumos/third_party/apitrace" />
   <project path="src/third_party/atheros"
            name="chromiumos/third_party/atheros" />
   <project path="src/third_party/atrusctl"