bluetooth: android: Implement & test CreateGattConnection.

device/bluetooth/bluetooth_device_android.h

 // Copyright 2015 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_ANDROID_H_
 #define DEVICE_BLUETOOTH_BLUETOOTH_DEVICE_ANDROID_H_
 
 #include "base/android/jni_android.h"
 #include "base/memory/weak_ptr.h"
 #include "device/bluetooth/bluetooth_device.h"
@@ skipping 18 matching lines @@
   // this correctly. http://crbug.com/506416
   static BluetoothDeviceAndroid* Create(
       BluetoothAdapterAndroid* adapter,
       jobject bluetooth_device_wrapper);  // Java Type: bluetoothDeviceWrapper
 
   ~BluetoothDeviceAndroid() override;
 
   // Register C++ methods exposed to Java using JNI.
   static bool RegisterJNI(JNIEnv* env);
 
+  // Returns the associated ChromeBluetoothDevice Java object.
+  base::android::ScopedJavaLocalRef<jobject> GetJavaObject();
+
   // Updates cached copy of advertised UUIDs discovered during a scan.
   // Returns true if new UUIDs differed from cached values.
   bool UpdateAdvertisedUUIDs(
       jobject advertised_uuids);  // Java Type: List<ParcelUuid>
 
   // BluetoothDevice:
   uint32 GetBluetoothClass() const override;
   std::string GetAddress() const override;
   VendorIDSource GetVendorIDSource() const override;
   uint16 GetVendorID() const override;
@@ skipping 24 matching lines @@
   void Forget(const ErrorCallback& error_callback) override;
   void ConnectToService(
       const device::BluetoothUUID& uuid,
       const ConnectToServiceCallback& callback,
       const ConnectToServiceErrorCallback& error_callback) override;
   void ConnectToServiceInsecurely(
       const device::BluetoothUUID& uuid,
       const ConnectToServiceCallback& callback,
       const ConnectToServiceErrorCallback& error_callback) override;
 
+  // Callback indicating when GATT client has connected/disconnected.
+  // See android.bluetooth.BluetoothGattCallback.onConnectionStateChange.
+  void OnConnectionStateChange(JNIEnv* env,
+                               jobject jcaller,
+                               int32_t status,
+                               bool connected);
+
  protected:
   BluetoothDeviceAndroid(BluetoothAdapterAndroid* adapter);
 
   // BluetoothDevice:
   std::string GetDeviceName() const override;
   void CreateGattConnectionImpl() override;
   void DisconnectGatt() override;
 
   // Java object org.chromium.device.bluetooth.ChromeBluetoothDevice.
   base::android::ScopedJavaGlobalRef<jobject> j_device_;
 
   bool gatt_connected_ = false;
 
   DISALLOW_COPY_AND_ASSIGN(BluetoothDeviceAndroid);
 };
 
 }  // namespace device
 
 #endif  // DEVICE_BLUETOOTH_BLUETOOTH_DEVICE_ANDROID_H_