Add optional creation to ProfileKeyedServiceFactory.

Add optional creation to ProfileKeyedServiceFactory.

Add an extra parameter to
ProfileKeyedServiceFactory::GetServiceForProfile so that individual
service factories can choose whether the service should be created if it
doesn't exist.

BUG=77155
TEST=existing tests

Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=82282

[Torne, 2011-04-19 14:54:30]

Some of the services are going to need this because callers expect to be able to
use the service without forcing it to be created. Seems trivial enough.

[Miranda Callahan, 2011-04-19 17:04:20]

LGTM with comment nit.

http://codereview.chromium.org/6879031/diff/1/chrome/browser/profiles/profile...
File chrome/browser/profiles/profile_keyed_service_factory.h (right):

http://codereview.chromium.org/6879031/diff/1/chrome/browser/profiles/profile...
chrome/browser/profiles/profile_keyed_service_factory.h:57: ProfileKeyedService*
GetServiceForProfile(Profile* profile, bool create);
add comment saying what the |create| parameter does.

[Torne, 2011-04-19 17:15:13]

http://codereview.chromium.org/6879031/diff/1/chrome/browser/profiles/profile...
File chrome/browser/profiles/profile_keyed_service_factory.h (right):

http://codereview.chromium.org/6879031/diff/1/chrome/browser/profiles/profile...
chrome/browser/profiles/profile_keyed_service_factory.h:57: ProfileKeyedService*
GetServiceForProfile(Profile* profile, bool create);
On 2011/04/19 17:04:20, Miranda Callahan wrote:
> add comment saying what the |create| parameter does.

Done.

[commit-bot: I haz the power, 2011-04-20 10:57:21]

Try job failure for 6879031-2002 on mac:
http://build.chromium.org/p/tryserver.chromium/buildstatus?builder=mac&number...