Properly lock access to static variables.
There were a few race conditions where the static method would test the validity of the hitograms_ static variable before attempting to use the lock_ to protect access to it but nothing then prevented the destructor to free both the lock_ and the hitograms_ memory.
So I decided to not use a dynamic allocation of the static lock_ to resolve this problem.
BUG=38354
TEST=Hard to repro exit scenario crashes.
Review URL: http://codereview.chromium.org/5784005
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@70054 0039d316-1c4b-4281-b951-d872f2087c98
CrOS-Libchrome-Original-Commit: d144255434dd27109c30c4e7a8124d76d7e83a4b
3 files changed