tree fe97655234318181a58827666576010abb745b18
parent ec7a9455c15b2cebb75a6036c8636beb601e543a
author tsepez <tsepez@chromium.org> 1475011797 -0700
committer Commit bot <commit-bot@chromium.org> 1475011797 -0700

Watch destruction of widgets around OnAAction() method.

We implemented the CFX_Observable mechanism for detecting
stale objects some time ago; now just use it in more places.

Change method signatures to required an ObservedPtr to
indicate that the callers are aware that the value may be
destroyed out from underneath them.

BUG=649659

Review-Url: https://codereview.chromium.org/2368403002