The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/e85944f082b27f903fcea5491549de058e157528

commit e85944f082b27f903fcea5491549de058e157528
Author: markusheintz <markusheintz@chromium.org>
Date: Fri Feb 17 17:55:28 2017

[remote suggestions] Add separte fetch interval for NTP open trigger

BUG=692727

Review-Url: https://codereview.chromium.org/2699613002
Cr-Commit-Position: refs/heads/master@{#451337}

[modify] https://crrev.com/e85944f082b27f903fcea5491549de058e157528/components/ntp_snippets/pref_names.cc
[modify] https://crrev.com/e85944f082b27f903fcea5491549de058e157528/components/ntp_snippets/pref_names.h
[modify] https://crrev.com/e85944f082b27f903fcea5491549de058e157528/components/ntp_snippets/remote/scheduling_remote_suggestions_provider.cc
[modify] https://crrev.com/e85944f082b27f903fcea5491549de058e157528/components/ntp_snippets/remote/scheduling_remote_suggestions_provider.h
[modify] https://crrev.com/e85944f082b27f903fcea5491549de058e157528/components/ntp_snippets/remote/scheduling_remote_suggestions_provider_unittest.cc