Have ScriptPromiseResolver on the Oilpan heap always.

Source/modules/bluetooth/BluetoothGATTCharacteristic.cpp

Index: Source/modules/bluetooth/BluetoothGATTCharacteristic.cpp
diff --git a/Source/modules/bluetooth/BluetoothGATTCharacteristic.cpp b/Source/modules/bluetooth/BluetoothGATTCharacteristic.cpp
index 3c3e73b958cbdf88b2b218b0654cb4b36d13fa53..7437c885f6f3728372998b3ad18b133913e70491 100644
--- a/Source/modules/bluetooth/BluetoothGATTCharacteristic.cpp
+++ b/Source/modules/bluetooth/BluetoothGATTCharacteristic.cpp
@@ -34,7 +34,7 @@ ScriptPromise BluetoothGATTCharacteristic::readValue(ScriptState* scriptState)
 {
     WebBluetooth* webbluetooth = BluetoothSupplement::from(scriptState);
 
-    RefPtrWillBeRawPtr<ScriptPromiseResolver> resolver = ScriptPromiseResolver::create(scriptState);
+    ScriptPromiseResolver* resolver = ScriptPromiseResolver::create(scriptState);
     ScriptPromise promise = resolver->promise();
     webbluetooth->readValue(m_webCharacteristic->characteristicInstanceID, new CallbackPromiseAdapter<ConvertWebVectorToArrayBuffer, BluetoothError>(resolver));
 
@@ -55,7 +55,7 @@ ScriptPromise BluetoothGATTCharacteristic::writeValue(ScriptState* scriptState,
     if (valueVector.size() > 512)
         return ScriptPromise::rejectWithDOMException(scriptState, DOMException::create(InvalidModificationError, "Value can't exceed 512 bytes."));
 
-    RefPtrWillBeRawPtr<ScriptPromiseResolver> resolver = ScriptPromiseResolver::create(scriptState);
+    ScriptPromiseResolver* resolver = ScriptPromiseResolver::create(scriptState);
 
     ScriptPromise promise = resolver->promise();
     webbluetooth->writeValue(m_webCharacteristic->characteristicInstanceID, valueVector, new CallbackPromiseAdapter<void, BluetoothError>(resolver));