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diff --git a/device/bluetooth/dbus/bluetooth_gatt_service_client.h b/device/bluetooth/dbus/bluetooth_gatt_service_client.h
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+++ b/device/bluetooth/dbus/bluetooth_gatt_service_client.h
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+// Copyright 2014 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_DBUS_BLUETOOTH_GATT_SERVICE_CLIENT_H_
+#define DEVICE_BLUETOOTH_DBUS_BLUETOOTH_GATT_SERVICE_CLIENT_H_
+
+#include <string>
+#include <vector>
+
+#include "dbus/object_path.h"
+#include "dbus/property.h"
+#include "device/bluetooth/bluetooth_export.h"
+#include "device/bluetooth/dbus/bluez_dbus_client.h"
+
+namespace bluez {
+
+// BluetoothGattServiceClient is used to communicate with remote GATT service
+// objects exposed by the Bluetooth daemon.
+class DEVICE_BLUETOOTH_EXPORT BluetoothGattServiceClient
+    : public BluezDBusClient {
+ public:
+  // Structure of properties associated with GATT services.
+  struct Properties : public dbus::PropertySet {
+    // The 128-bit service UUID. [read-only]
+    dbus::Property<std::string> uuid;
+
+    // Object path of the Bluetooth device that the GATT service belongs to.
+    dbus::Property<dbus::ObjectPath> device;
+
+    // Whether or not this service is a primary service.
+    dbus::Property<bool> primary;
+
+    // Array of object paths representing the characteristics of this service.
+    // [read-only]
+    dbus::Property<std::vector<dbus::ObjectPath>> characteristics;
+
+    // Array of object paths representing the included services of this service.
+    // [read-only]
+    dbus::Property<std::vector<dbus::ObjectPath>> includes;
+
+    Properties(dbus::ObjectProxy* object_proxy,
+               const std::string& interface_name,
+               const PropertyChangedCallback& callback);
+    ~Properties() override;
+  };
+
+  // Interface for observing changes from a remote GATT service.
+  class Observer {
+   public:
+    virtual ~Observer() {}
+
+    // Called when the GATT service with object path |object_path| is added to
+    // the system.
+    virtual void GattServiceAdded(const dbus::ObjectPath& object_path) {}
+
+    // Called when the GATT service with object path |object_path| is removed
+    // from the system.
+    virtual void GattServiceRemoved(const dbus::ObjectPath& object_path) {}
+
+    // Called when the GATT service with object path |object_path| has a change
+    // in the value of the property named |property_name|.
+    virtual void GattServicePropertyChanged(const dbus::ObjectPath& object_path,
+                                            const std::string& property_name) {}
+  };
+
+  ~BluetoothGattServiceClient() override;
+
+  // Adds and removes observers for events on all remote GATT services. Check
+  // the |object_path| parameter of observer methods to determine which GATT
+  // service is issuing the event.
+  virtual void AddObserver(Observer* observer) = 0;
+  virtual void RemoveObserver(Observer* observer) = 0;
+
+  // Returns the list of GATT service object paths known to the system.
+  virtual std::vector<dbus::ObjectPath> GetServices() = 0;
+
+  // Obtain the properties for the GATT service with object path |object_path|.
+  // Values should be copied if needed.
+  virtual Properties* GetProperties(const dbus::ObjectPath& object_path) = 0;
+
+  // Creates the instance.
+  static BluetoothGattServiceClient* Create();
+
+ protected:
+  BluetoothGattServiceClient();
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(BluetoothGattServiceClient);
+};
+
+}  // namespace bluez
+
+#endif  // DEVICE_BLUETOOTH_DBUS_BLUETOOTH_GATT_SERVICE_CLIENT_H_