Tablet-like power button behavior on Convertible/Tablet ChromeOS devices

chromeos/dbus/fake_power_manager_client.h

Index: chromeos/dbus/fake_power_manager_client.h
diff --git a/chromeos/dbus/fake_power_manager_client.h b/chromeos/dbus/fake_power_manager_client.h
index 14eca3c39f24a4cfdc98b04f93cec35884435fad..e843bea0804f6d99765a81fc45957a2e4767d49f 100644
--- a/chromeos/dbus/fake_power_manager_client.h
+++ b/chromeos/dbus/fake_power_manager_client.h
@@ -87,6 +87,10 @@ class CHROMEOS_EXPORT FakePowerManagerClient : public PowerManagerClient {
       const power_manager::PowerSupplyProperties& power_props);
 
  private:
+  // Emulates the power manager announcing that the system is changing
+  // brightness to |level|.
+  void SendBrightnessChanged(int level, bool user_initiated);
+
   // Callback that will be run by asynchronous suspend delays to report
   // readiness.
   void HandleSuspendReadiness();