Add IsOriginSecure and GURL::SchemeUsesTLS.

chrome/common/origin_util.cc

Index: chrome/common/origin_util.cc
diff --git a/chrome/common/origin_util.cc b/chrome/common/origin_util.cc
new file mode 100644
index 0000000000000000000000000000000000000000..2884d74e2b9b9fa97fa803f2b892d8b701743ee7
--- /dev/null
+++ b/chrome/common/origin_util.cc
@@ -0,0 +1,33 @@
+// Copyright (c) 2015 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 "chrome/common/origin_util.h"
+
+#include "content/public/common/url_constants.h"
+#include "extensions/common/constants.h"
+#include "net/base/net_util.h"
+#include "url/gurl.h"
+
+bool IsOriginSecure(const GURL& url) {
+  if (url.SchemeUsesTLS() || url.SchemeIsFile())
+    return true;
+
+  if (url.SchemeIsFileSystem() && url.inner_url() &&
+      IsOriginSecure(*url.inner_url())) {
+    return true;
+  }
+
+  std::string hostname = url.HostNoBrackets();
+  if (net::IsLocalhost(hostname))
+    return true;
+
+  std::string scheme = url.scheme();
+  if (scheme == content::kChromeUIScheme ||
+      scheme == extensions::kExtensionScheme ||
+      scheme == extensions::kExtensionResourceScheme) {
+    return true;
+  }
+
+  return false;
+}