Use mojo for Chrome Loading, Part 1

content/common/url_response_head.typemap

Index: content/common/url_response_head.typemap
diff --git a/content/common/url_response_head.typemap b/content/common/url_response_head.typemap
new file mode 100644
index 0000000000000000000000000000000000000000..3ea295d303cc236c4395af4e386226eb84665daa
--- /dev/null
+++ b/content/common/url_response_head.typemap
@@ -0,0 +1,14 @@
+# Copyright 2016 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.
+
+mojom = "//content/common/url_loader.mojom"
+public_headers = [
+  "//content/public/common/resource_response.h"
+]
+traits_headers = [
+   "//content/common/resource_messages.h"
+]
+deps = [
+]
+type_mappings = [ "content.mojom.URLResponseHead=content::ResourceResponseHead" ]