[Fuchsia] Package the http service into a CIPD archive.

This adds the http service package to a new CIPD archive.

Bug: 874155
Test: Locally, build still works.
Change-Id: I44937c496a1af342d0bf7f67581cef4c0fb83cb9
Reviewed-on: https://chromium-review.googlesource.com/c/1300674
Commit-Queue: Fabrice de Gans-Riberi <fdegans@chromium.org>
Reviewed-by: Kevin Marshall <kmarshall@chromium.org>
Cr-Commit-Position: refs/heads/master@{#603615}

webrunner/BUILD.gn

@@ -279,6 +279,7 @@ process_version("build_id") {
 copy("restaged_packages") {
   sources = [
     "$root_gen_dir/webrunner/chromium/chromium.far",
+    "$root_gen_dir/webrunner/net_http/http/http.far",
     "$root_gen_dir/webrunner/web_runner/web_runner.far",
   ]
   outputs = [
@@ -287,6 +288,7 @@ copy("restaged_packages") {
   deps = [
     ":service_pkg",
     ":webrunner_pkg",
+    "net_http:http_pkg",
   ]
 }
 

webrunner/cipd/http.yaml

+# Copyright 2018 The Chromium Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+# Creates a package for the HTTP service binary.
+# The ID of the target architecture (amd64, arm64) must be passed in as
+# a pkg-var so that the packages can be archived at the appropriate location
+# in the CIPD package hierarchy.
+#
+# pkg-var arguments:
+#   outdir: A fully qualified path to the build output directory.
+#   targetarch: The target architecture, either "amd64" or "arm64".
+#
+# To create a CIPD package, run the following command from the build output
+# directory.
+#
+# $ cipd create --pkg-def ../../webrunner/cipd/http.yaml \
+#               -pkg-var targetarch:$TARGET_ARCH \
+#               -pkg-var outdir:`pwd` \
+#               -ref latest \
+#               -tag version:$(cat fuchsia_artifacts/build_id.txt)
+#
+# The most recent package can be discovered by searching for the "latest" ref:
+#
+# $ cipd describe chromium/fuchsia/http-$TARGET_ARCH -version latest
+
+package: chromium/fuchsia/http-${targetarch}
+description: Prebuilt HTTP service binary for Fuchsia.
+root: ${outdir}/fuchsia_artifacts
+data:
+  - file: http.far
+  - file: LICENSE