Add cobalt_src to recipes.

Updated cobalt.py recipe to fetch from cobalt_src repository rather than
the deprecated chromium repository. Added cobalt_old.py recipe to fetch
the deprecated chromium repository.

b/32018151
b/79549696
b/138408315

Change-Id: I1be9139c5a512fc8c2c7f82efaf5527515f1ac72
diff --git a/recipes/cobalt.py b/recipes/cobalt.py
index 0de554e..0fca3f7 100644
--- a/recipes/cobalt.py
+++ b/recipes/cobalt.py
@@ -1,4 +1,4 @@
-# Copyright 2014 The Chromium Authors. All rights reserved.
+# Copyright 2019 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.
 
@@ -19,7 +19,7 @@
       branch = props['branch']
     ref = 'remotes/origin/%s' % branch
 
-    url = 'https://lbshell-internal.googlesource.com/chromium.git@%s' % ref
+    url = 'https://lbshell-internal.googlesource.com/cobalt_src@%s' % ref
     solution = { 'name'   :'src',
                  'url'    : url,
                  'deps_file': 'DEPS',
diff --git a/recipes/cobalt-src.py b/recipes/cobalt_old.py
similarity index 93%
rename from recipes/cobalt-src.py
rename to recipes/cobalt_old.py
index 0457d7c..984bc90 100644
--- a/recipes/cobalt-src.py
+++ b/recipes/cobalt_old.py
@@ -19,7 +19,7 @@
       branch = props['branch']
     ref = 'remotes/origin/%s' % branch
 
-    url = 'https://lbshell-internal.googlesource.com/cobalt-src@%s' % ref
+    url = 'https://lbshell-internal.googlesource.com/chromium.git@%s' % ref
     solution = { 'name'   :'src',
                  'url'    : url,
                  'deps_file': 'DEPS',