Issue 5013 - Use const JsValue and pass reference where applicable

src/WebRequestJsObject.cpp

 /*
  * This file is part of Adblock Plus <https://adblockplus.org/>,
  * Copyright (C) 2006-2017 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
@@ skipping 61 matching lines @@
       AdblockPlus::JsValuePtr resultObject = jsEngine->NewObject();
       resultObject->SetProperty("status", result.status);
       resultObject->SetProperty("responseStatus", result.responseStatus);
       resultObject->SetProperty("responseText", result.responseText);
 
       AdblockPlus::JsValuePtr headersObject = jsEngine->NewObject();
       for (const auto& header : result.responseHeaders)
       {
         headersObject->SetProperty(header.first, header.second);
       }
-      resultObject->SetProperty("responseHeaders", *headersObject);
+      resultObject->SetProperty("responseHeaders", headersObject);
 
       AdblockPlus::JsConstValueList params;
       params.push_back(resultObject);
       callback->Call(params);
     }
 
   private:
     AdblockPlus::JsEnginePtr jsEngine;
     std::string url;
     AdblockPlus::HeaderList headers;
@@ skipping 15 matching lines @@
     {
       using AdblockPlus::Utils::ToV8String;
       v8::Isolate* isolate = arguments.GetIsolate();
       return v8::ThrowException(ToV8String(isolate, e.what()));
     }
     thread->Start();
     return v8::Undefined();
   }
 }
 
-AdblockPlus::JsValue& AdblockPlus::WebRequestJsObject::Setup(
-    AdblockPlus::JsEngine& jsEngine, AdblockPlus::JsValue& obj)
+AdblockPlus::JsValuePtr AdblockPlus::WebRequestJsObject::Setup(
+    AdblockPlus::JsEngine& jsEngine, const AdblockPlus::JsValuePtr& obj)
 {
-  obj.SetProperty("GET", *jsEngine.NewCallback(::GETCallback));
+  obj->SetProperty("GET", jsEngine.NewCallback(::GETCallback));
   return obj;
 }