commit 84f30fe06877193d39bb2cb9fe345c2e12e695b3
author brucedawson <brucedawson@chromium.org> Fri Sep 11 03:08:29 2015
committer Commit bot <commit-bot@chromium.org> Fri Sep 11 03:09:45 2015
tree cefa84bc8703e7c4ee6aaf70e465ede8a3e8129e
parent 34ab19d59ff4a5bc098d90eb7c4fc76afec568ef

Get GenericScopedHandle::Set to preserve LastError code

Code like this is elegant and clean and common in Chrome:

  event_.Set(CreateEvent(NULL, FALSE, FALSE, wname.c_str()));
  if (event_.Get() && GetLastError() != ERROR_ALREADY_EXISTS) {

However it will behave incorrectly if event_.Set() zeroes out the
Windows LastError code, which VC++ 2015 frequently does. This change
avoids that.

R=rvargas@chromium.org
BUG=528394,529981,440500

Review URL: https://codereview.chromium.org/1320673016

Cr-Commit-Position: refs/heads/master@{#348324}