Rename ErrorCallback into LogSystem, provide a proper console API

test/BaseJsTest.h

Index: test/BaseJsTest.h
===================================================================
--- a/test/BaseJsTest.h
+++ b/test/BaseJsTest.h
@@ -17,20 +17,21 @@
 
 #ifndef MOCKS_H
 #define MOCKS_H
 
 #include <AdblockPlus.h>
 #include <gtest/gtest.h>
 #include "../src/Thread.h"
 
-class ThrowingErrorCallback : public AdblockPlus::ErrorCallback
+class ThrowingLogSystem : public AdblockPlus::LogSystem
 {
 public:
-  void operator()(const std::string& message)
+  void operator()(LogLevel logLevel, const std::string& message,
+        const std::string& source)
   {
     throw std::runtime_error("Unexpected error: " + message);
   }
 };
 
 class ThrowingFileSystem : public AdblockPlus::FileSystem
 {
   std::tr1::shared_ptr<std::istream> Read(const std::string& path) const
@@ -129,15 +130,15 @@ class LazyWebRequest : public AdblockPlu
 class BaseJsTest : public ::testing::Test
 {
 protected:
   AdblockPlus::JsEnginePtr jsEngine;
 
   virtual void SetUp()
   {
     jsEngine = AdblockPlus::JsEngine::New();
-    jsEngine->SetErrorCallback(AdblockPlus::ErrorCallbackPtr(new ThrowingErrorCallback));
+    jsEngine->SetLogSystem(AdblockPlus::LogSystemPtr(new ThrowingLogSystem));
     jsEngine->SetFileSystem(AdblockPlus::FileSystemPtr(new ThrowingFileSystem));
     jsEngine->SetWebRequest(AdblockPlus::WebRequestPtr(new ThrowingWebRequest));
   }
 };
 
 #endif