Unload all apps / extensions immediately when deleting a profile.
Previously apps could remain running with references to profiles that had been deleted by users, but before the browser shut down and profiles were fully removed. Problems included E.g. opening a link in an app would open a tab in the deleted profile.
Relanding patch: ShutdownStartupCycle failed in build [49353], this patch was speculatively reverted in r269383 [49355], but ShutdownStartupCycle failed again in [49362] after the revert had landed.
[49353] http://build.chromium.org/p/chromium.mac/builders/Mac%2010.6%20Tests%20%28dbg%29%281%29/builds/49353
[49355] http://build.chromium.org/p/chromium.mac/builders/Mac%2010.6%20Tests%20%28dbg%29%281%29/builds/49355
[49362] http://build.chromium.org/p/chromium.mac/builders/Mac%2010.6%20Tests%20%28dbg%29%281%29/builds/49362
BUG=368684, 374683
TEST=Manual testing as described on http://crbug.com/368684#c1 and http://crbug.com/374683#c7
Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=269343
Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=270890
Review URL: https://codereview.chromium.org/
266343002
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@272090 0039d316-1c4b-4281-b951-d872f2087c98