87f2607570
Most of the things that get injected into EmailArguments are singletons themselves, the others can be turned into providers. Making EmailArguments a singleton prevents that we have to create a new instance of this class whenever an email is sent. Change-Id: I2459a3ea79d94d8ba8203a385cfcca8bb99cfeaf Signed-off-by: Edwin Kempin <ekempin@google.com>