commit 4419cbd172b5d77e0e33b7622666e523d8b20afa
author yukishiino <yukishiino@chromium.org> Mon May 30 08:27:29 2016
committer Commit bot <commit-bot@chromium.org> Mon May 30 08:29:10 2016
tree b67c4e8b7d207c41f806408b3ab1c8877bd0fa9e
parent a7e95b0468908825cdafa072ed1b8f99f3859a93

binding: Reimplements V8HiddenValue as V8PrivateProperty.

V8HiddenValue is very slow.  This CL implements it again as
V8PrivateProperty so that it will be efficient.  Also makes it clear
which interface and which attribute, etc. is using which private symbol.
Note that "Class#property" is recommended as symbol names by V8.

Following CLs will replace V8HiddenValue with V8PrivateProperty gradually.

BUG=611864

Review-Url: https://codereview.chromium.org/2007463003
Cr-Commit-Position: refs/heads/master@{#396694}