Hook up RSSI and host transmit power Bluetooth device properties for ChromeOS.

chromeos/dbus/bluetooth_device_client.h

Index: chromeos/dbus/bluetooth_device_client.h
diff --git a/chromeos/dbus/bluetooth_device_client.h b/chromeos/dbus/bluetooth_device_client.h
index 11f5a1cb772db7d88f3971a417f4ade59405c27a..a09b4ef528a5800dc87ddcace2648afcbb29b078 100644
--- a/chromeos/dbus/bluetooth_device_client.h
+++ b/chromeos/dbus/bluetooth_device_client.h
@@ -76,9 +76,24 @@ class CHROMEOS_EXPORT BluetoothDeviceClient : public DBusClient {
     // Remote Device ID information in Linux kernel modalias format. Read-only.
     dbus::Property<std::string> modalias;
 
-    // Received signal strength indicator. Read-only.
+    // Received signal strength indicator that is set when the device is
+    // discovered during inquiry. Read-only.
     dbus::Property<int16> rssi;
 
+    // Received signal strength indicator when a connection is open to the
+    // device. This property is not set unless connection monitor is enabled.
+    // Read-only.
+    dbus::Property<int16> connection_rssi;
+
+    // The transmit power level of the host when a connection is open
+    // to the device. This property is not set unless connection monitor is
+    // enabled. Read-only.
+    dbus::Property<int16> connection_tx_power;
+
+    // The maximum transmit power level of the host that can be set
+    // when connected to the device. Read-only.
+    dbus::Property<int16> connection_tx_power_max;
+
     Properties(dbus::ObjectProxy* object_proxy,
                const std::string& interface_name,
                const PropertyChangedCallback& callback);
@@ -169,6 +184,19 @@ class CHROMEOS_EXPORT BluetoothDeviceClient : public DBusClient {
                              const base::Closure& callback,
                              const ErrorCallback& error_callback) = 0;
 
+  // Starts connection monitor for the device with object path
+  // |object_path|. Connection monitor is a mode the connection properties,
+  // RSSI and TX power are tracked and updated when they change.
+  virtual void StartConnectionMonitor(const dbus::ObjectPath& object_path,
+                                      const base::Closure& callback,
+                                      const ErrorCallback& error_callback) = 0;
+
+  // Stops connection monitor for the device with object path
+  // |object_path|.
+  virtual void StopConnectionMonitor(const dbus::ObjectPath& object_path,
+                                     const base::Closure& callback,
+                                     const ErrorCallback& error_callback) = 0;
+
   // Creates the instance.
   static BluetoothDeviceClient* Create();