Issue 5183 - Provide async interface for FileSystem

src/Utils.h

Index: src/Utils.h
===================================================================
--- a/src/Utils.h
+++ b/src/Utils.h
@@ -17,24 +17,29 @@
 
 #ifndef ADBLOCK_PLUS_UTILS_H
 #define ADBLOCK_PLUS_UTILS_H
 
 #include <algorithm>
 #include <cctype>
 #include <functional>
 #include <string>
+#include <vector>
 #include <v8.h>
 
+#include "AdblockPlus/JsValue.h"
+
 namespace AdblockPlus
 {
   namespace Utils
   {
     std::string FromV8String(const v8::Handle<v8::Value>& value);
+    StringBuffer StringBufferFromV8String(const v8::Handle<v8::Value>& value);
     v8::Local<v8::String> ToV8String(v8::Isolate* isolate, const std::string& str);
+    v8::Local<v8::String> StringBufferToV8String(v8::Isolate* isolate, const StringBuffer& bytes);
     void ThrowExceptionInJS(v8::Isolate* isolate, const std::string& str);
 
     // Code for templated function has to be in a header file, can't be in .cpp
     template<class T>
     T TrimString(const T& text)
     {
       // Via http://stackoverflow.com/questions/216823/whats-the-best-way-to-trim-stdstring
       T trimmed(text);