Implement WebBluetooth getDescriptor[s]

third_party/WebKit/public/platform/modules/bluetooth/WebBluetoothRemoteGATTDescriptor.h

Index: third_party/WebKit/public/platform/modules/bluetooth/WebBluetoothRemoteGATTDescriptor.h
diff --git a/third_party/WebKit/public/platform/modules/bluetooth/WebBluetoothRemoteGATTDescriptor.h b/third_party/WebKit/public/platform/modules/bluetooth/WebBluetoothRemoteGATTDescriptor.h
new file mode 100644
index 0000000000000000000000000000000000000000..b19b07eac8aa7482ce7be0aed45b20d76035723a
--- /dev/null
+++ b/third_party/WebKit/public/platform/modules/bluetooth/WebBluetoothRemoteGATTDescriptor.h
@@ -0,0 +1,22 @@
+// 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 WebBluetoothRemoteGATTDescriptor_h
+#define WebBluetoothRemoteGATTDescriptor_h
+
+#include "public/platform/WebVector.h"
+
+namespace blink {
+
+// An object through which the embedder can trigger events on a Document-bound
+// Web Bluetooth GATT Descriptor object.
+class WebBluetoothRemoteGATTDescriptor {
+ public:
+  // Used to notify blink that the descriptor's value changed.
+  virtual void dispatchDescriptorValueChanged(const WebVector<uint8_t>&) = 0;
+};
+
+}  // namespace blink
+
+#endif  // WebBluetoothRemoteGATTDescriptor