Simplify SelfKeepAlive<T>'s representation.

Following r202197, a Persistent<> is only instantiated when assigned a
non-null pointer value. Consequently, SelfKeepAlive<>'s use of an OwnPtr<>
indirection to achieve the same is no longer needed.

R=haraken
BUG=420515

Review URL: https://codereview.chromium.org/1339043002

git-svn-id: svn://svn.chromium.org/blink/trunk@202202 bbb929c8-8fbe-4397-9dbb-9b2b20218538
1 file changed
tree: 5c1d1fcf25a6271b08d6da41c78adbba2ea6c8a1
  1. third_party/