Add a milo console link to tryserver.chromium.chrome.

The actual console is being defined in crrev.com/i/1122303

And also add a link to the schema for milo's config proto.

Bug: 932269
Change-Id: I06d53ae756095e742186d095aef71d57ad99be43
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1546520
Commit-Queue: Ben Pastene <bpastene@chromium.org>
Reviewed-by: John Budorick <jbudorick@chromium.org>
Cr-Commit-Position: refs/heads/master@{#646344}

infra/config/luci-milo.cfg

+# See http://luci-config.appspot.com/schemas/projects:luci-milo.cfg for schema
+# of this file and documentation.
+
 logo_url: "https://storage.googleapis.com/chrome-infra-public/logo/chromium.svg"
 
 headers {
@@ -184,6 +187,11 @@ headers {
       url: "/p/chromium/g/tryserver.blink/builders"
       alt: "Blink"
     }
+    links {
+      text: "chrome"
+      url: "/p/chrome/g/tryserver.chromium.chrome/builders"
+      alt: "Chrome"
+    }
     links {
       text: "chromiumos"
       url: "/p/chromium/g/tryserver.chromium.chromiumos/builders"