Use chromium logic for database identifier<->origin conversions

webkit/common/database/database_identifier.h

 // Copyright 2013 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.
 
 #include <string>
 
 #include "base/basictypes.h"
 #include "base/strings/string_piece.h"
 #include "googleurl/src/gurl.h"
 #include "webkit/common/webkit_storage_common_export.h"
 
 namespace webkit_database {
 
+WEBKIT_STORAGE_COMMON_EXPORT std::string GetIdentifierFromOrigin(
+    const GURL& origin);
+WEBKIT_STORAGE_COMMON_EXPORT GURL GetOriginFromIdentifier(
+    const std::string& identifier);
+
 class WEBKIT_STORAGE_COMMON_EXPORT DatabaseIdentifier {
  public:
   static const DatabaseIdentifier UniqueFileIdentifier();
   static DatabaseIdentifier CreateFromOrigin(const GURL& origin);
   static DatabaseIdentifier Parse(const std::string& identifier);
   ~DatabaseIdentifier();
 
   std::string ToString() const;
   GURL ToOrigin() const;
 
@@ skipping 11 matching lines @@
                      bool is_file);
 
   std::string scheme_;
   std::string hostname_;
   int port_;
   bool is_unique_;
   bool is_file_;
 };
 
 }  // namespace webkit_database