Rename ErrorCallback into LogSystem, provide a proper console API

include/AdblockPlus/JsEngine.h

 /*
  * This file is part of Adblock Plus <http://adblockplus.org/>,
  * Copyright (C) 2006-2013 Eyeo GmbH
  *
  * Adblock Plus is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 3 as
  * published by the Free Software Foundation.
  *
  * Adblock Plus is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  * GNU General Public License for more details.
  *
  * You should have received a copy of the GNU General Public License
  * along with Adblock Plus.  If not, see <http://www.gnu.org/licenses/>.
  */
 
 #ifndef ADBLOCK_PLUS_JS_ENGINE_H
 #define ADBLOCK_PLUS_JS_ENGINE_H
 
 #include <stdexcept>
 #include <stdint.h>
 #include <string>
 #include <v8.h>
 #include <AdblockPlus/AppInfo.h>
-#include <AdblockPlus/ErrorCallback.h>
+#include <AdblockPlus/LogSystem.h>
 #include <AdblockPlus/FileSystem.h>
 #include <AdblockPlus/JsValue.h>
 #include <AdblockPlus/WebRequest.h>
 
 #include "tr1_memory.h"
 
 namespace AdblockPlus
 {
   class JsError : public std::runtime_error
   {
@@ skipping 33 matching lines @@
 #endif
     JsValuePtr NewObject();
     JsValuePtr NewCallback(v8::InvocationCallback callback);
     static JsEnginePtr FromArguments(const v8::Arguments& arguments);
     JsValueList ConvertArguments(const v8::Arguments& arguments);
 
     FileSystemPtr GetFileSystem();
     void SetFileSystem(FileSystemPtr val);
     WebRequestPtr GetWebRequest();
     void SetWebRequest(WebRequestPtr val);
-    ErrorCallbackPtr GetErrorCallback();
-    void SetErrorCallback(ErrorCallbackPtr val);
+    LogSystemPtr GetLogSystem();
+    void SetLogSystem(LogSystemPtr val);
 
     class Context
     {
     public:
       Context(const JsEnginePtr jsEngine);
       virtual inline ~Context() {};
 
     private:
       const v8::Locker locker;
       const v8::HandleScope handleScope;
       const v8::Context::Scope contextScope;
     };
 
   private:
     JsEngine();
 
     FileSystemPtr fileSystem;
     WebRequestPtr webRequest;
-    ErrorCallbackPtr errorCallback;
+    LogSystemPtr logSystem;
     v8::Isolate* isolate;
     v8::Persistent<v8::Context> context;
   };
 }
 
 #endif