Move IsValidOriginIdentifier into appropriate header

storage/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.
 
 #ifndef STORAGE_COMMON_DATABASE_DATABASE_IDENTIFIER_H_
 #define STORAGE_COMMON_DATABASE_DATABASE_IDENTIFIER_H_
 
 #include <string>
 
 #include "base/strings/string_piece.h"
 #include "storage/common/storage_common_export.h"
 #include "url/gurl.h"
 
 namespace storage {
 
 STORAGE_COMMON_EXPORT std::string GetIdentifierFromOrigin(
     const GURL& origin);
 STORAGE_COMMON_EXPORT GURL GetOriginFromIdentifier(
     const std::string& identifier);
+STORAGE_COMMON_EXPORT bool IsValidOriginIdentifier(
+    const std::string& identifier);
 
 class 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 14 matching lines @@
   std::string scheme_;
   std::string hostname_;
   int port_;
   bool is_unique_;
   bool is_file_;
 };
 
 }  // namespace storage
 
 #endif  // STORAGE_COMMON_DATABASE_DATABASE_IDENTIFIER_H_