bluetooth: Add Device connection logic and accompanying user interface.

device/bluetooth/device.h

Index: device/bluetooth/device.h
diff --git a/device/bluetooth/device.h b/device/bluetooth/device.h
index c82439e6c283ecb6e851e466061bedf060a18420..fbfbb3e850440380a07a0bad94b130af3ce23b59 100644
--- a/device/bluetooth/device.h
+++ b/device/bluetooth/device.h
@@ -11,6 +11,8 @@
 #include "base/memory/ref_counted.h"
 #include "device/bluetooth/bluetooth_adapter.h"
 #include "device/bluetooth/bluetooth_device.h"
+#include "device/bluetooth/bluetooth_gatt_connection.h"
+#include "device/bluetooth/bluetooth_remote_gatt_service.h"
 #include "device/bluetooth/public/interfaces/device.mojom.h"
 
 namespace bluetooth {
@@ -21,8 +23,8 @@ namespace bluetooth {
 // Uses the platform abstraction of device/bluetooth.
 class Device : public mojom::Device {
  public:
-  Device(const std::string& address,
-         scoped_refptr<device::BluetoothAdapter> adapter);
+  Device(scoped_refptr<device::BluetoothAdapter> adapter,
+         std::unique_ptr<device::BluetoothGattConnection> connection);
   ~Device() override;
 
   // Creates a mojom::DeviceInfo using info from the given |device|.
@@ -31,14 +33,18 @@ class Device : public mojom::Device {
 
   // mojom::Device overrides:
   void GetInfo(const GetInfoCallback& callback) override;
+  void GetServices(const GetServicesCallback& callback) override;
 
  private:
-  // The address of the Bluetooth device.
-  std::string address_;
+  mojom::ServiceInfoPtr ConstructServiceInfoStruct(
+      const device::BluetoothRemoteGattService* service);
 
   // The current BluetoothAdapter.
   scoped_refptr<device::BluetoothAdapter> adapter_;
 
+  // The GATT connection to this device.
+  std::unique_ptr<device::BluetoothGattConnection> connection_;
+
   DISALLOW_COPY_AND_ASSIGN(Device);
 };