bluetooth: android: Confirm the notify session after the descriptor has been written.

device/bluetooth/bluetooth_remote_gatt_characteristic_android.h

Index: device/bluetooth/bluetooth_remote_gatt_characteristic_android.h
diff --git a/device/bluetooth/bluetooth_remote_gatt_characteristic_android.h b/device/bluetooth/bluetooth_remote_gatt_characteristic_android.h
index 4493a94579509581601d8e049126bb8f656d010a..65a761215be20a529fcd543ea21f228d30f36668 100644
--- a/device/bluetooth/bluetooth_remote_gatt_characteristic_android.h
+++ b/device/bluetooth/bluetooth_remote_gatt_characteristic_android.h
@@ -7,6 +7,8 @@
 
 #include <stdint.h>
 
+#include <queue>
+
 #include "base/android/jni_android.h"
 #include "base/containers/scoped_ptr_hash_map.h"
 #include "base/macros.h"
@@ -78,6 +80,11 @@ class DEVICE_BLUETOOTH_EXPORT BluetoothRemoteGattCharacteristicAndroid
                  const base::android::JavaParamRef<jobject>& jcaller,
                  const base::android::JavaParamRef<jbyteArray>& value);
 
+  // Callback after StartNotifySession operation completes.
+  void OnStartNotifySession(JNIEnv* env,
+                            const base::android::JavaParamRef<jobject>& jcaller,
+                            int32_t status);
+
   // Callback after Read operation completes.
   void OnRead(JNIEnv* env,
               const base::android::JavaParamRef<jobject>& jcaller,
@@ -123,6 +130,11 @@ class DEVICE_BLUETOOTH_EXPORT BluetoothRemoteGattCharacteristicAndroid
   // Adapter unique instance ID.
   std::string instance_id_;
 
+  // StartNotifySession callbacks and pending state.
+  typedef std::pair<NotifySessionCallback, ErrorCallback>
+      PendingStartNotifyCall;
+  std::queue<PendingStartNotifyCall> pending_start_notify_calls_;
+
   // ReadRemoteCharacteristic callbacks and pending state.
   bool read_pending_ = false;
   ValueCallback read_callback_;