[DO NOT COMMIT] Re-use the dafsa code for s-w-r histograms

net/base/swr_histogram_domains/BUILD.gn

Index: net/base/swr_histogram_domains/BUILD.gn
diff --git a/net/base/swr_histogram_domains/BUILD.gn b/net/base/swr_histogram_domains/BUILD.gn
new file mode 100644
index 0000000000000000000000000000000000000000..b926fface300d7c729fb04486c1162d6cc9597c6
--- /dev/null
+++ b/net/base/swr_histogram_domains/BUILD.gn
@@ -0,0 +1,18 @@
+# Copyright (c) 2014 The Chromium Authors. All rights reserved.

[tyoshino (SeeGerritForStatus), 2015/10/30 06:29:59]

let's use 2015 as the contents are very different from the original.

[Adam Rice, 2015/11/02 13:53:54]

Done.

+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+action_foreach("swr_histogram_domains") {
+  script = "//net/tools/dafsa/make_dafsa.py"
+  sources = [
+    "swr_histogram_domains.gperf",
+  ]
+  outputs = [
+    "${target_gen_dir}/{{source_name_part}}-inc.cc",
+  ]
+  args = [
+    "{{source}}",
+    rebase_path("${target_gen_dir}/{{source_name_part}}-inc.cc",
+                root_build_dir),
+  ]
+}