Small improvements to MixedContentChecker.

third_party/WebKit/Source/platform/network/NetworkUtils.cpp

Index: third_party/WebKit/Source/platform/network/NetworkUtils.cpp
diff --git a/third_party/WebKit/Source/platform/network/NetworkUtils.cpp b/third_party/WebKit/Source/platform/network/NetworkUtils.cpp
index 87ece834a96737bc85b85d343a20b1a742c43f43..57c0b4c7ea7822c0070c6c3fa10307bfee963020 100644
--- a/third_party/WebKit/Source/platform/network/NetworkUtils.cpp
+++ b/third_party/WebKit/Source/platform/network/NetworkUtils.cpp
@@ -5,6 +5,7 @@
 #include "platform/network/NetworkUtils.h"
 
 #include "net/base/ip_address.h"
+#include "net/base/url_util.h"
 #include "wtf/text/StringUTF8Adaptor.h"
 #include "wtf/text/WTFString.h"
 
@@ -21,6 +22,12 @@ bool isReservedIPAddress(const String& host)
     return address.IsReserved();
 }
 
+bool isLocalHostname(const String& host, bool* isLocal6)
+{
+    StringUTF8Adaptor utf8(host);
+    return net::IsLocalHostname(utf8.asStringPiece(), isLocal6);
+}
+
 } // NetworkUtils
 
 } // namespace blink