Expose device RSSI and Tx power via the chrome.bluetooth API.

device/bluetooth/bluetooth_device_mac.h

 // Copyright 2013 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 DEVICE_BLUETOOTH_BLUETOOTH_DEVICE_MAC_H_
 #define DEVICE_BLUETOOTH_BLUETOOTH_DEVICE_MAC_H_
 
+#import <IOBluetooth/IOBluetooth.h>
+
 #include <string>
 
 #include "base/basictypes.h"
 #include "base/mac/scoped_nsobject.h"
 #include "base/observer_list.h"
 #include "device/bluetooth/bluetooth_device.h"
 
 @class IOBluetoothDevice;
 
 namespace device {
 
 class BluetoothDeviceMac : public BluetoothDevice {
  public:
   explicit BluetoothDeviceMac(IOBluetoothDevice* device);
   virtual ~BluetoothDeviceMac();
 
   // BluetoothDevice override
   virtual void AddObserver(
       device::BluetoothDevice::Observer* observer) OVERRIDE;
   virtual void RemoveObserver(
       device::BluetoothDevice::Observer* observer) OVERRIDE;
   virtual uint32 GetBluetoothClass() const OVERRIDE;
   virtual std::string GetAddress() const OVERRIDE;
   virtual VendorIDSource GetVendorIDSource() const OVERRIDE;
   virtual uint16 GetVendorID() const OVERRIDE;
   virtual uint16 GetProductID() const OVERRIDE;
   virtual uint16 GetDeviceID() const OVERRIDE;
+  virtual int GetRSSI() const OVERRIDE;
+  virtual int GetCurrentHostTransmitPower() const OVERRIDE;
+  virtual int GetMaximumHostTransmitPower() const OVERRIDE;
   virtual bool IsPaired() const OVERRIDE;
   virtual bool IsConnected() const OVERRIDE;
   virtual bool IsConnectable() const OVERRIDE;
   virtual bool IsConnecting() const OVERRIDE;
   virtual UUIDList GetUUIDs() const OVERRIDE;
   virtual bool ExpectingPinCode() const OVERRIDE;
   virtual bool ExpectingPasskey() const OVERRIDE;
   virtual bool ExpectingConfirmation() const OVERRIDE;
   virtual void Connect(
       PairingDelegate* pairing_delegate,
@@ skipping 20 matching lines @@
       const base::Closure& callback,
       const ErrorCallback& error_callback) OVERRIDE;
 
  protected:
   // BluetoothDevice override
   virtual std::string GetDeviceName() const OVERRIDE;
 
  private:
   friend class BluetoothAdapterMac;
 
+  // Implementation to read the host's transmit power level of type
+  // |power_level_type|.
+  int GetHostTransmitPower(
+      BluetoothHCITransmitPowerLevelType power_level_type) const;
+
   // List of observers interested in event notifications from us.
   ObserverList<Observer> observers_;
 
   base::scoped_nsobject<IOBluetoothDevice> device_;
 
   DISALLOW_COPY_AND_ASSIGN(BluetoothDeviceMac);
 };
 
 }  // namespace device
 
 #endif  // DEVICE_BLUETOOTH_BLUETOOTH_DEVICE_MAC_H_