Don't serialize ArrayBuffer as Array

lib/browser/rpc-server.js

@@ -91,7 +91,7 @@ let valueToMeta = function (sender, value, optimizeSimpleObject = false) {
     meta.members = getObjectMembers(value)
     meta.proto = getObjectPrototype(value)
   } else if (meta.type === 'buffer') {
-    meta.value = Array.prototype.slice.call(value, 0)
+    meta.value = Buffer.from(value)
   } else if (meta.type === 'promise') {
     // Add default handler to prevent unhandled rejections in main process
     // Instead they should appear in the renderer process

lib/renderer/api/remote.js

@@ -33,7 +33,7 @@ const wrapArgs = function (args, visited) {
     } else if (ArrayBuffer.isView(value)) {
       return {
         type: 'buffer',
-        value: Array.prototype.slice.call(value, 0)
+        value: Buffer.from(value)
       }
     } else if (value instanceof Date) {
       return {