Extension half of the proxy error event

chrome/browser/extensions/extension_proxy_api.h

 // Copyright (c) 2010 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 CHROME_BROWSER_EXTENSIONS_EXTENSION_PROXY_API_H_
 #define CHROME_BROWSER_EXTENSIONS_EXTENSION_PROXY_API_H_
 
 #include <string>
 
+#include "base/singleton.h"
 #include "chrome/browser/extensions/extension_function.h"
 #include "net/proxy/proxy_config.h"
 
 class DictionaryValue;
+class ExtensionIOEventRouter;
+
+// This class observes proxy error events and routes them to the appropriate
+// extensions listening to those events. All methods must be called on the IO
+// thread unless otherwise specified.
+class ExtensionProxyEventRouter {

[Bernhard Bauer, 2011/02/22 13:13:53]

I guess this class is not used yet?

+ public:
+  static ExtensionProxyEventRouter* GetInstance();
+
+  void OnProxyError(const ExtensionIOEventRouter* event_router,
+                    int error_code);
+
+ private:
+  friend struct DefaultSingletonTraits<ExtensionProxyEventRouter>;
+
+  ExtensionProxyEventRouter();
+  ~ExtensionProxyEventRouter();
+
+  DISALLOW_COPY_AND_ASSIGN(ExtensionProxyEventRouter);
+};
 
 class ProxySettingsFunction : public SyncExtensionFunction {
  public:
   virtual ~ProxySettingsFunction() {}
   virtual bool RunImpl() = 0;
  protected:
   // Takes ownership of |pref_value|.
   void ApplyPreference(
       const char* pref_path, Value* pref_value, bool incognito);
   void RemovePreference(const char* pref_path, bool incognito);
@@ skipping 51 matching lines @@
   // Convert the representation of a proxy configuration from the format
   // that is stored in the pref stores to the format that is used by the API.
   // See ProxyServer type defined in |experimental.proxy|.
   bool ConvertToApiFormat(const DictionaryValue* proxy_prefs,
                           DictionaryValue* api_proxy_config);
   bool ParseRules(const std::string& rules, DictionaryValue* out) const;
   DictionaryValue* ConvertToDictionary(const net::ProxyServer& proxy) const;
 };
 
 #endif  // CHROME_BROWSER_EXTENSIONS_EXTENSION_PROXY_API_H_