Make [S,G]getBacklightsForcedOff dbus API integrated to power_manager_client

chromeos/dbus/fake_power_manager_client.cc

Index: chromeos/dbus/fake_power_manager_client.cc
diff --git a/chromeos/dbus/fake_power_manager_client.cc b/chromeos/dbus/fake_power_manager_client.cc
index dcb82fac20dd48af9a34d86a0bdd10d2a857279a..e7b904f88db9add225878f0496289807ec4daef1 100644
--- a/chromeos/dbus/fake_power_manager_client.cc
+++ b/chromeos/dbus/fake_power_manager_client.cc
@@ -134,6 +134,11 @@ void FakePowerManagerClient::SetPowerSource(const std::string& id) {
   NotifyObservers();
 }
 
+void FakePowerManagerClient::SetBacklightsForcedOff(bool is_off) {}
+
+void FakePowerManagerClient::GetBacklightsForcedOffState(
+    const GetBacklightsForcedOffStateCallback& callback) {}

[Daniel Erat, 2016/10/13 17:25:19]

mind stubbing the implementation of this to make it easier to write tests for
the UI code that will call it? i think you just need to add a
backlights_forced_off_ bool member and then update it in SetBacklightsForcedOff
and do something like this here:

  base::ThreadTaskRunnerHandle::Get()->PostTask(
      FROM_HERE, base::Bind(callback, backlights_forced_off_));

[Qiang(Joe) Xu, 2016/10/13 21:19:40]

Done.

+
 base::Closure FakePowerManagerClient::GetSuspendReadinessCallback() {
   ++num_pending_suspend_readiness_callbacks_;