Attach a WebBluetooth to the LocalFrame and use it if it's available.

Source/modules/bluetooth/BluetoothDevice.cpp

Index: Source/modules/bluetooth/BluetoothDevice.cpp
diff --git a/Source/modules/bluetooth/BluetoothDevice.cpp b/Source/modules/bluetooth/BluetoothDevice.cpp
index 0cff381756d98519a220031d45c6a60979b1dbbc..fc73c11cca9d423cce69d1a8aab591ea7e40f55b 100644
--- a/Source/modules/bluetooth/BluetoothDevice.cpp
+++ b/Source/modules/bluetooth/BluetoothDevice.cpp
@@ -12,7 +12,7 @@
 #include "core/dom/ExceptionCode.h"
 #include "modules/bluetooth/BluetoothError.h"
 #include "modules/bluetooth/BluetoothGATTRemoteServer.h"
-#include "public/platform/Platform.h"
+#include "modules/bluetooth/BluetoothSupplement.h"
 #include "public/platform/modules/bluetooth/WebBluetooth.h"
 
 namespace blink {
@@ -77,7 +77,7 @@ Vector<String> BluetoothDevice::uuids()
 
 ScriptPromise BluetoothDevice::connectGATT(ScriptState* scriptState)
 {
-    WebBluetooth* webbluetooth = Platform::current()->bluetooth();
+    WebBluetooth* webbluetooth = BluetoothSupplement::from(scriptState);
     if (!webbluetooth)
         return ScriptPromise::rejectWithDOMException(scriptState, DOMException::create(NotSupportedError));
     RefPtrWillBeRawPtr<ScriptPromiseResolver> resolver = ScriptPromiseResolver::create(scriptState);