Adding ArcBridge interface for synchronizing brightness settings

chromeos/dbus/power_manager_client.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROMEOS_DBUS_POWER_MANAGER_CLIENT_H_
 #define CHROMEOS_DBUS_POWER_MANAGER_CLIENT_H_
 
 #include <string>
 
 #include "base/callback.h"
@@ skipping 43 matching lines @@
     virtual ~Observer() {}
 
     // Called if the power manager process restarts.
     virtual void PowerManagerRestarted() {}
 
     // Called when the brightness is changed.
     // |level| is of the range [0, 100].
     // |user_initiated| is true if the action is initiated by the user.
     virtual void BrightnessChanged(int level, bool user_initiated) {}
 
+    // Noitify android setting about brightness change

[Muyuan, 2017/04/05 18:41:08]

dbus/power_manager_client is pretty general and it exists in many platforms that
you shouldn't say "notify android".. 

[yueli, 2017/04/05 19:59:46]

Done.

+    virtual void NotifyBrightnessChange(double brightness) {}

[Muyuan, 2017/04/05 18:41:08]

This function is probably not needed. You can override BrightnessChanged in
ArcPowerBridge

[yueli, 2017/04/05 19:59:46]

Done.

+
     // Called when peripheral device battery status is received.
     // |path| is the sysfs path for the battery of the peripheral device.
     // |name| is the human readble name of the device.
     // |level| within [0, 100] represents the device battery level and -1
     // means an unknown level or device is disconnected.
     virtual void PeripheralBatteryStatusReceived(const std::string& path,
                                                  const std::string& name,
                                                  int level) {}
 
     // Called when updated information about the power supply is available.
@@ skipping 84 matching lines @@
   // Set the screen brightness to |percent|, in the range [0.0, 100.0].
   // If |gradual| is true, the transition will be animated.
   virtual void SetScreenBrightnessPercent(double percent, bool gradual) = 0;
 
   // Asynchronously gets the current screen brightness, in the range
   // [0.0, 100.0]. On error (e.g. powerd not running), |callback| will not be
   // run.
   virtual void GetScreenBrightnessPercent(
       const GetScreenBrightnessPercentCallback& callback) = 0;
 
+  // Get the current screen brightness and syncrhonize it to android settings
+  virtual void SyncScreenBrightness() = 0;
+
   // Decreases the keyboard brightness.
   virtual void DecreaseKeyboardBrightness() = 0;
 
   // Increases the keyboard brightness.
   virtual void IncreaseKeyboardBrightness() = 0;
 
   // Requests an updated copy of the power status. Observer::PowerChanged()
   // will be called asynchronously.
   virtual void RequestStatusUpdate() = 0;
 
@@ skipping 60 matching lines @@
   // Create() should be used instead.
   PowerManagerClient();
 
  private:
   DISALLOW_COPY_AND_ASSIGN(PowerManagerClient);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROMEOS_DBUS_POWER_MANAGER_CLIENT_H_