Move ABP JS code loading to FilterEngine and make it optional

src/JsEngine.cpp

 #include <AdblockPlus.h>
 #include <sstream>
 
 #include "ConsoleJsObject.h"
 
-extern const char* jsSources[];
-
 namespace
 {
   v8::Handle<v8::Context> CreateContext(
     AdblockPlus::ErrorCallback& errorCallback)
   {
     const v8::HandleScope handleScope;
     const v8::Handle<v8::ObjectTemplate> global = v8::ObjectTemplate::New();
     global->Set(v8::String::New("console"),
                 AdblockPlus::ConsoleJsObject::Create(errorCallback));
     return v8::Context::New(0, global);
@@ skipping 44 matching lines @@
 AdblockPlus::JsError::JsError(const v8::Handle<v8::Value> exception,
     const v8::Handle<v8::Message> message)
   : std::runtime_error(ExceptionToString(exception, message))
 {
 }
 
 AdblockPlus::JsEngine::JsEngine(const FileReader* const fileReader,
                                 ErrorCallback* const errorCallback)
   : fileReader(fileReader), context(CreateContext(*errorCallback))
 {
-  for (int i = 0; jsSources[i] && jsSources[i + 1]; i += 2)
-    Evaluate(jsSources[i + 1], jsSources[i]);
 }
 
 void AdblockPlus::JsEngine::Evaluate(const char* source, const char* filename)
 {
   const v8::HandleScope handleScope;
   const v8::Context::Scope contextScope(context);
   const v8::TryCatch tryCatch;
   const v8::Handle<v8::Script> script = CompileScript(source, filename);
   CheckTryCatch(tryCatch);
   script->Run();
@@ skipping 26 matching lines @@
   const v8::Local<v8::Value> result = function->Call(function, 0, 0);
   CheckTryCatch(tryCatch);
   const v8::String::AsciiValue ascii(result);
   return *ascii;
 }
 
 void AdblockPlus::JsEngine::Gc()
 {
   while (!v8::V8::IdleNotification());
 }