Provide mutable members of UrlRequestContext via pure-virtual interface

net/url_request/const_http_accept_language_and_charset.h

Index: net/url_request/const_http_accept_language_and_charset.h
diff --git a/net/url_request/const_http_accept_language_and_charset.h b/net/url_request/const_http_accept_language_and_charset.h
new file mode 100644
index 0000000000000000000000000000000000000000..f325cec8f9b9bad5f0a903e8af95a714ea77b772
--- /dev/null
+++ b/net/url_request/const_http_accept_language_and_charset.h
@@ -0,0 +1,40 @@
+// Copyright (c) 2012 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 NET_URL_REQUEST_CONST_HTTP_ACCEPT_LANGUAGE_AND_CHARSET_H_
+#define NET_URL_REQUEST_CONST_HTTP_ACCEPT_LANGUAGE_AND_CHARSET_H_
+
+#include "base/basictypes.h"
+#include "base/compiler_specific.h"
+#include "net/url_request/http_user_agent_settings.h"
+
+namespace net {
+
+// A partial implementation of |HttpUserAgentSettings| that always provides
+// the same constant values for the HTTP Accept-Language and Accept-Charset
+// headers.  Implementors can inherit from this class and implement
+// |GetUserAgent()|.
+class NET_EXPORT ConstHttpAcceptLanguageAndCharset
+  : public HttpUserAgentSettings {

[mmenke, 2012/09/26 16:28:20]

4 space indent.

+ public:
+  // HttpUserAgentSettings implementation
+  virtual const std::string& GetAcceptLanguage() OVERRIDE;
+  virtual const std::string& GetAcceptCharset() OVERRIDE;
+
+ protected:
+  ConstHttpAcceptLanguageAndCharset(const std::string& accept_language,
+                                    const std::string& accept_charset);
+  virtual ~ConstHttpAcceptLanguageAndCharset() {}
+
+ private:
+  const std::string accept_language_;
+  const std::string accept_charset_;
+
+  DISALLOW_COPY_AND_ASSIGN(ConstHttpAcceptLanguageAndCharset);
+};
+
+}  // namespace net
+
+#endif  // NET_URL_REQUEST_CONST_HTTP_ACCEPT_LANGUAGE_AND_CHARSET_H_
+