Re-enable storage for Suborigins.

content/common/origin_util.cc

Index: content/common/origin_util.cc
diff --git a/content/common/origin_util.cc b/content/common/origin_util.cc
index 4dfdc6ce8caf7efae0598c82dace3bc6171e8b65..bdf3795d4693af2d08e39c47d9a8790ecccaf764 100644
--- a/content/common/origin_util.cc
+++ b/content/common/origin_util.cc
@@ -86,4 +86,24 @@ void ResetSchemesAndOriginsWhitelistForTesting() {
   g_trustworthy_whitelist.Get().Reset();
 }
 
+bool HasSuborigin(const GURL& url) {
+  return url.host().find("_") != std::string::npos;
+}
+
+std::string SuboriginFromUrl(const GURL& url) {
+  if (!HasSuborigin(url))
+    return "";
+  size_t suborigin_end = url.host().find("_");
+  return url.host().substr(0, suborigin_end);
+}
+
+std::string HostFromUrlStripSuborigin(const GURL& url) {
+  std::string host = url.host();
+  size_t suborigin_end = host.find("_");
+  if (suborigin_end == std::string::npos)
+    return host;
+  return url.host().substr(suborigin_end + 1,
+                           host.length() - suborigin_end - 1);
+}
+
 }  // namespace content