Remove invalid Chrome To Mobile DCHECK, infer notifications are enabled on receipt.

DCHECK from http://crrev.com/152801 may fail in known acceptable cases:
See ctor: // TODO(msw|akalin): Initialize |sync_invalidation_enabled_| properly.
OnIncomingNotification may be called before/after OnNotifications[En|Dis]abled.
This is related to (and partially blocked by) Issues 142475 and 137086.

BUG=144589,142475,137086
TEST=No crash, no send failures due to notifications-enabled false positive.
TBR=sky@chromium.org

Review URL: https://chromiumcodereview.appspot.com/10874058

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@153309 0039d316-1c4b-4281-b951-d872f2087c98
1 file changed