Revert of Implement BluetoothGattNotifySession::Stop on Android

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 c0606b420c7ae2c6bf6adffeda5d320bd660faa4..eed5c4623c56eb9384a41c552d9f0aa8d0991be6 100644
--- a/device/bluetooth/bluetooth_remote_gatt_characteristic_android.h
+++ b/device/bluetooth/bluetooth_remote_gatt_characteristic_android.h
@@ -61,14 +61,24 @@
   BluetoothRemoteGattService* GetService() const override;
   Properties GetProperties() const override;
   Permissions GetPermissions() const override;
+  bool IsNotifying() const override;
   std::vector<BluetoothRemoteGattDescriptor*> GetDescriptors() const override;
   BluetoothRemoteGattDescriptor* GetDescriptor(
       const std::string& identifier) const override;
+  void StartNotifySession(const NotifySessionCallback& callback,
+                          const ErrorCallback& error_callback) override;
   void ReadRemoteCharacteristic(const ValueCallback& callback,
                                 const ErrorCallback& error_callback) override;
   void WriteRemoteCharacteristic(const std::vector<uint8_t>& new_value,
                                  const base::Closure& callback,
                                  const ErrorCallback& error_callback) override;
+
+  // Called when StartNotifySession operation succeeds.
+  void OnStartNotifySessionSuccess();
+
+  // Called when StartNotifySession operation fails.
+  void OnStartNotifySessionError(
+      BluetoothRemoteGattService::GattErrorCode error);
 
   // Called when value changed event occurs.
   void OnChanged(JNIEnv* env,
@@ -99,15 +109,6 @@
           jobject>& /* ChromeBluetoothCharacteristic */
       chrome_bluetooth_characteristic);
 
- protected:
-  void SubscribeToNotifications(BluetoothRemoteGattDescriptor* ccc_descriptor,
-                                const base::Closure& callback,
-                                const ErrorCallback& error_callback) override;
-  void UnsubscribeFromNotifications(
-      BluetoothRemoteGattDescriptor* ccc_descriptor,
-      const base::Closure& callback,
-      const ErrorCallback& error_callback) override;
-
  private:
   BluetoothRemoteGattCharacteristicAndroid(
       BluetoothAdapterAndroid* adapter,
@@ -128,6 +129,11 @@
 
   // Adapter unique instance ID.
   std::string instance_id_;
+
+  // StartNotifySession callbacks and pending state.
+  typedef std::pair<NotifySessionCallback, ErrorCallback>
+      PendingStartNotifyCall;
+  std::vector<PendingStartNotifyCall> pending_start_notify_calls_;
 
   // ReadRemoteCharacteristic callbacks and pending state.
   bool read_pending_ = false;