Convert references to FileSystem & Co. into shared pointers (avoid use after free)

include/AdblockPlus/DefaultWebRequest.h

-#ifndef ADBLOCKPLUS_WEB_REQUEST_H
-#define ADBLOCKPLUS_WEB_REQUEST_H
+#ifndef ADBLOCKPLUS_DEFAULT_WEB_REQUEST_H
+#define ADBLOCKPLUS_DEFAULT_WEB_REQUEST_H
 
-#include <string>
-#include <vector>
+#include "WebRequest.h"
 
 namespace AdblockPlus
 {
-  typedef std::vector<std::pair<std::string, std::string> > HeaderList;
-
-  struct ServerResponse
-  {
-#ifdef _WIN32
-    __int64 status;
-#else
-    int64_t status;
-#endif
-    HeaderList responseHeaders;
-    int responseStatus;
-    std::string responseText;
-  };
-
-  class WebRequest
-  {
-  public:
-    enum
-    {
-      NS_OK = 0,
-      NS_ERROR_FAILURE = 0x80004005,
-      NS_ERROR_OUT_OF_MEMORY = 0x8007000e,
-      NS_ERROR_MALFORMED_URI = 0x804b000a,
-      NS_ERROR_CONNECTION_REFUSED = 0x804b000d,
-      NS_ERROR_NET_TIMEOUT = 0x804b000e,
-      NS_ERROR_NO_CONTENT = 0x804b0011,
-      NS_ERROR_UNKNOWN_PROTOCOL = 0x804b0012,
-      NS_ERROR_NET_RESET = 0x804b0014,
-      NS_ERROR_UNKNOWN_HOST = 0x804b001e,
-      NS_ERROR_REDIRECT_LOOP = 0x804b001f,
-      NS_ERROR_UNKNOWN_PROXY_HOST = 0x804b002a,
-      NS_ERROR_NOT_INITIALIZED = 0xc1f30001,
-      NS_CUSTOM_ERROR_BASE = 0x80850000
-    };
-
-    virtual inline ~WebRequest() {};
-    virtual ServerResponse GET(const std::string& url, const HeaderList& requestHeaders) const = 0;
-  };
-
   class DefaultWebRequest : public WebRequest
   {
     ServerResponse GET(const std::string& url, const HeaderList& requestHeaders) const;
   };
 }
 
 #endif