Add IsOriginSecure and GURL::SchemeUsesTLS.

url/gurl.cc

Index: url/gurl.cc
diff --git a/url/gurl.cc b/url/gurl.cc
index 46ca408da9c9c55f1e919365dab03db5038aedff..a826a779a15def7728a6bf3eb3ebbf3020047d00 100644
--- a/url/gurl.cc
+++ b/url/gurl.cc
@@ -458,6 +458,29 @@ bool GURL::HostIsIPAddress() const {
   return host_info.IsIPAddress();
 }
 
+bool GURL::HostIsLocal() const {
+  if (!is_valid_ || spec_.empty())
+    return false;
+
+  if (HostNoBrackets() == "localhost")
+    return true;
+
+  url::RawCanonOutputT<char, 128> ignored;
+  url::CanonHostInfo host_info;
+  url::CanonicalizeIPAddress(spec_.c_str(), parsed_.host, &ignored, &host_info);
+
+  static const unsigned char v4_localhost = 0x7F;
+  if (host_info.family == url::CanonHostInfo::IPV4)
+    return host_info.address[0] == v4_localhost;
+
+  static const unsigned char v6_localhost[] =
+      { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1 };
+  if (host_info.family == url::CanonHostInfo::IPV6)
+    return memcmp(host_info.address, v6_localhost, sizeof(v6_localhost)) == 0;
+
+  return false;
+}
+
 #ifdef WIN32
 
 const GURL& GURL::EmptyGURL() {