Alt-Svc 8: Change Supports SPDY list using SHP as the key.

url/scheme_host_port.h

Index: url/scheme_host_port.h
diff --git a/url/scheme_host_port.h b/url/scheme_host_port.h
index 47a9041e2afd8e1db1b92654b0d72cfddef9bdd4..5066b7a664e6b546179350ab6c94c1126cc95309 100644
--- a/url/scheme_host_port.h
+++ b/url/scheme_host_port.h
@@ -95,6 +95,8 @@ class URL_EXPORT SchemeHostPort {
 
   ~SchemeHostPort();
 
+  static SchemeHostPort FromString(const std::string& url_string);
+
   // Returns the host component, in URL form. That is all IDN domain names will
   // be expressed as A-Labels ('☃.net' will be returned as 'xn--n3h.net'), and
   // and all IPv6 addresses will be enclosed in brackets ("[2001:db8::1]").
@@ -111,6 +113,9 @@ class URL_EXPORT SchemeHostPort {
   // serialized as a unique Origin.
   std::string Serialize() const;
 
+  // ToString() will convert the SchemeHostPort to "scheme://host:port".
+  std::string ToString() const;
+
   // Two SchemeHostPort objects are "equal" iff their schemes, hosts, and ports
   // are exact matches.
   //