Add std::string constructors for Origin/SchemeHostPort to reduce copies

url/scheme_host_port.h

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef URL_SCHEME_HOST_PORT_H_
 #define URL_SCHEME_HOST_PORT_H_
 
 #include <stdint.h>
 
 #include <string>
@@ skipping 78 matching lines @@
                  uint16_t port);
 
   // Metadata influencing whether or not the constructor should sanity check
   // host canonicalization.
   enum ConstructPolicy { CHECK_CANONICALIZATION, ALREADY_CANONICALIZED };
 
   // Creates a (scheme, host, port) tuple without performing sanity checking
   // that the host and port are canonicalized. This should only be used when
   // converting between already normalized types, and should NOT be used for
   // IPC.
-  SchemeHostPort(base::StringPiece scheme,
-                 base::StringPiece host,
+  SchemeHostPort(std::string scheme,
+                 std::string host,
                  uint16_t port,
                  ConstructPolicy policy);
 
   // Creates a (scheme, host, port) tuple from |url|, as described at
   // https://tools.ietf.org/html/rfc6454#section-4
   //
   // If |url| is invalid or non-standard, the result will be an invalid
   // SchemeHostPort object.
   explicit SchemeHostPort(const GURL& url);
 
@@ skipping 35 matching lines @@
   std::string SerializeInternal(url::Parsed* parsed) const;
 
   std::string scheme_;
   std::string host_;
   uint16_t port_;
 };
 
 }  // namespace url
 
 #endif  // URL_SCHEME_HOST_PORT_H_