Have Permission{Manager,Service} use Origin.

url/origin.cc

Index: url/origin.cc
diff --git a/url/origin.cc b/url/origin.cc
index 97e24f208d5b2098df01078615a7791503d30fbf..7efd9c453f2dd35ceaf2c55675bd5d6ec55d32ff 100644
--- a/url/origin.cc
+++ b/url/origin.cc
@@ -17,10 +17,9 @@
 
 namespace url {
 
-Origin::Origin() : unique_(true) {
-}
+Origin::Origin() : unique_(true), empty_(true) {}
 
-Origin::Origin(const GURL& url) : unique_(true) {
+Origin::Origin(const GURL& url) : unique_(true), empty_(url.is_empty()) {
   if (!url.is_valid() || (!url.IsStandard() && !url.SchemeIsBlob()))
     return;
 
@@ -39,6 +38,8 @@ Origin::Origin(const GURL& url) : unique_(true) {
   unique_ = tuple_.IsInvalid();
 }
 
+Origin::Origin(const std::string& url_string) : Origin(GURL(url_string)) {}
+
 Origin::Origin(base::StringPiece scheme, base::StringPiece host, uint16_t port)
     : tuple_(scheme, host, port) {
   unique_ = tuple_.IsInvalid();