download filename fix

net/url_request/url_request_context.h

 // Copyright (c) 2006-2008 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.
 
 // This class represents contextual information (cookies, cache, etc.)
 // that's useful when processing resource requests.
 // The class is reference-counted so that it can be cleaned up after any
 // requests that are using it have been completed.
 
 #ifndef NET_URL_REQUEST_URL_REQUEST_CONTEXT_H_
@@ skipping 52 matching lines @@
   // Gets the value of 'Accept-Language' header field.
   const std::string& accept_language() const { return accept_language_; }
 
   // Gets the UA string to use for the given URL.  Pass an invalid URL (such as
   // GURL()) to get the default UA string.  Subclasses should override this
   // method to provide a UA string.
   virtual const std::string& GetUserAgent(const GURL& url) const {
     return EmptyString();
   }
 
+  // In general, referrer_charset is not known when URLRequestContext is
+  // constructed. So, we need a setter.
+  const std::string& referrer_charset() const { return referrer_charset_; }
+  void set_referrer_charset(const std::string& charset) {
+    referrer_charset_ = charset;
+  }
+
  protected:
   friend class base::RefCountedThreadSafe<URLRequestContext>;
 
   virtual ~URLRequestContext() {}
 
   // The following members are expected to be initialized and owned by
   // subclasses.
   net::ProxyService* proxy_service_;
   net::HttpTransactionFactory* http_transaction_factory_;
   net::FtpTransactionFactory* ftp_transaction_factory_;
   net::CookieMonster* cookie_store_;
   net::CookiePolicy cookie_policy_;
   net::FtpAuthCache ftp_auth_cache_;
   std::string accept_language_;
   std::string accept_charset_;
+  // The charset of the referrer where this request comes from. It's not
+  // used in communication with a server but is used to construct a suggested
+  // filename for file download.
+  std::string referrer_charset_;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(URLRequestContext);
 };
 
 #endif  // NET_URL_REQUEST_URL_REQUEST_CONTEXT_H_