bluetooth: Move Bluetooth-related Blink API headers into their own directory.

Source/modules/bluetooth/BluetoothDevice.h

 // Copyright 2014 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 BluetoothDevice_h
 #define BluetoothDevice_h
 
 #include "bindings/core/v8/ScriptWrappable.h"
 #include "platform/heap/Heap.h"
-#include "public/platform/WebBluetoothDevice.h"
+#include "public/platform/modules/bluetooth/WebBluetoothDevice.h"
 #include "wtf/text/WTFString.h"
 
 namespace blink {
 
 class ScriptPromiseResolver;
 
 // BluetoothDevice represents a physical bluetooth device in the DOM. See IDL.
 //
 // Callbacks providing WebBluetoothDevice objects are handled by
 // CallbackPromiseAdapter templatized with this class. See this class's
@@ skipping 28 matching lines @@
     bool connected(bool& isNull);
     Vector<String> uuids(bool& isNull);
 
 private:
     WebBluetoothDevice m_webDevice;
 };
 
 } // namespace blink
 
 #endif // BluetoothDevice_h