Convert sky_server over to a go-based http server.

sky/tools/download_sky_server

Index: sky/tools/download_sky_server
diff --git a/sky/tools/download_sky_server b/sky/tools/download_sky_server
new file mode 100755
index 0000000000000000000000000000000000000000..b29f6a3067c0968b8d7e9961a5bcbbaa49659149
--- /dev/null
+++ b/sky/tools/download_sky_server
@@ -0,0 +1,20 @@
+#!/usr/bin/env python
+# Copyright (c) 2014 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.
+
+import subprocess
+
+from webkitpy.common.system import filesystem
+from webkitpy.common.webkit_finder import WebKitFinder
+
+finder = WebKitFinder(filesystem.FileSystem())
+
+subprocess.call([
+    'download_from_google_storage',
+    '--no_resume',
+    '--no_auth',
+    '--bucket', 'mojo',
+    '--sha1_file', finder.path_from_chromium_base('sky', 'tools', 'skygo', 'sky_server.sha1'),
+    '--output', finder.path_from_chromium_base('out', 'downloads', 'sky_server')
+])