Introduce WebRequestResourceType.

extensions/browser/api/web_request/web_request_resource_type.cc

Index: extensions/browser/api/web_request/web_request_resource_type.cc
diff --git a/extensions/browser/api/web_request/web_request_resource_type.cc b/extensions/browser/api/web_request/web_request_resource_type.cc
new file mode 100644
index 0000000000000000000000000000000000000000..6882ff59b887b072aa5df36687be521d8a8b88fe
--- /dev/null
+++ b/extensions/browser/api/web_request/web_request_resource_type.cc
@@ -0,0 +1,23 @@
+// Copyright 2017 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.
+
+#include "extensions/browser/api/web_request/web_request_resource_type.h"
+
+#include "base/logging.h"
+#include "content/public/browser/resource_request_info.h"
+#include "net/url_request/url_request.h"
+
+namespace extensions {
+
+WebRequestResourceType ToWebRequestResourceType(
+    const net::URLRequest* request) {
+  DCHECK(request);
+  if (request->url().SchemeIsWSOrWSS())
+    return WebRequestResourceType::WEB_SOCKET;
+  const auto* info = content::ResourceRequestInfo::ForRequest(request);
+  return info ? ToWebRequestResourceType(info->GetResourceType())
+              : WebRequestResourceType::OTHER;

[Devlin, 2017/02/16 16:08:26]

and then return INVALID if info is null rather than OTHER

[pkalinnikov, 2017/02/16 19:27:33]

Done.

+}
+
+}  // namespace extensions