diff --git a/components/script/dom/bluetooth.rs b/components/script/dom/bluetooth.rs
index 143bc04855a..a0e5484abd3 100644
--- a/components/script/dom/bluetooth.rs
+++ b/components/script/dom/bluetooth.rs
@@ -8,7 +8,6 @@ use dom::bindings::codegen::Bindings::BluetoothBinding::{self, BluetoothMethods,
 use dom::bindings::codegen::Bindings::BluetoothBinding::RequestDeviceOptions;
 use dom::bindings::error::Error::{self, Security, Type};
 use dom::bindings::error::Fallible;
-use dom::bindings::global::GlobalRef;
 use dom::bindings::js::Root;
 use dom::bindings::reflector::{Reflectable, Reflector, reflect_dom_object};
 use dom::bindings::str::DOMString;
@@ -271,10 +270,10 @@ fn canonicalize_filter(filter: &BluetoothRequestDeviceFilter) -> Fallible<Blueto
 }
 
 #[allow(unrooted_must_root)]
-pub fn result_to_promise<T: ToJSValConvertible>(global_ref: GlobalRef,
+pub fn result_to_promise<T: ToJSValConvertible>(global: &GlobalScope,
                                                 bluetooth_result: Fallible<T>)
                                                 -> Rc<Promise> {
-    let p = Promise::new(global_ref.as_global_scope());
+    let p = Promise::new(global);
     match bluetooth_result {
         Ok(v) => p.resolve_native(p.global().r().get_cx(), &v),
         Err(e) => p.reject_error(p.global().r().get_cx(), e),
@@ -298,6 +297,6 @@ impl BluetoothMethods for Bluetooth {
     #[allow(unrooted_must_root)]
     // https://webbluetoothcg.github.io/web-bluetooth/#dom-bluetooth-requestdevice
     fn RequestDevice(&self, option: &RequestDeviceOptions) -> Rc<Promise> {
-        result_to_promise(self.global().r(), self.request_device(option))
+        result_to_promise(&self.global_scope(), self.request_device(option))
     }
 }
diff --git a/components/script/dom/bluetoothremotegattcharacteristic.rs b/components/script/dom/bluetoothremotegattcharacteristic.rs
index faa6eba4bef..425fcffb9cb 100644
--- a/components/script/dom/bluetoothremotegattcharacteristic.rs
+++ b/components/script/dom/bluetoothremotegattcharacteristic.rs
@@ -212,7 +212,7 @@ impl BluetoothRemoteGATTCharacteristicMethods for BluetoothRemoteGATTCharacteris
     #[allow(unrooted_must_root)]
     // https://webbluetoothcg.github.io/web-bluetooth/#dom-bluetoothremotegattcharacteristic-getdescriptor
     fn GetDescriptor(&self, descriptor: BluetoothDescriptorUUID) -> Rc<Promise> {
-        result_to_promise(self.global().r(), self.get_descriptor(descriptor))
+        result_to_promise(&self.global_scope(), self.get_descriptor(descriptor))
     }
 
     #[allow(unrooted_must_root)]
@@ -220,7 +220,7 @@ impl BluetoothRemoteGATTCharacteristicMethods for BluetoothRemoteGATTCharacteris
     fn GetDescriptors(&self,
                       descriptor: Option<BluetoothDescriptorUUID>)
                       -> Rc<Promise> {
-        result_to_promise(self.global().r(), self.get_descriptors(descriptor))
+        result_to_promise(&self.global_scope(), self.get_descriptors(descriptor))
     }
 
     // https://webbluetoothcg.github.io/web-bluetooth/#dom-bluetoothremotegattcharacteristic-value
@@ -231,12 +231,12 @@ impl BluetoothRemoteGATTCharacteristicMethods for BluetoothRemoteGATTCharacteris
     #[allow(unrooted_must_root)]
     // https://webbluetoothcg.github.io/web-bluetooth/#dom-bluetoothremotegattcharacteristic-readvalue
     fn ReadValue(&self) -> Rc<Promise> {
-        result_to_promise(self.global().r(), self.read_value())
+        result_to_promise(&self.global_scope(), self.read_value())
     }
 
     #[allow(unrooted_must_root)]
     // https://webbluetoothcg.github.io/web-bluetooth/#dom-bluetoothremotegattcharacteristic-writevalue
     fn WriteValue(&self, value: Vec<u8>) -> Rc<Promise> {
-        result_to_promise(self.global().r(), self.write_value(value))
+        result_to_promise(&self.global_scope(), self.write_value(value))
     }
 }
diff --git a/components/script/dom/bluetoothremotegattdescriptor.rs b/components/script/dom/bluetoothremotegattdescriptor.rs
index 2bc2821f607..d42742bc235 100644
--- a/components/script/dom/bluetoothremotegattdescriptor.rs
+++ b/components/script/dom/bluetoothremotegattdescriptor.rs
@@ -135,12 +135,12 @@ impl BluetoothRemoteGATTDescriptorMethods for BluetoothRemoteGATTDescriptor {
     #[allow(unrooted_must_root)]
     // https://webbluetoothcg.github.io/web-bluetooth/#dom-bluetoothremotegattdescriptor-readvalue
     fn ReadValue(&self) -> Rc<Promise> {
-        result_to_promise(self.global().r(), self.read_value())
+        result_to_promise(&self.global_scope(), self.read_value())
     }
 
     #[allow(unrooted_must_root)]
     // https://webbluetoothcg.github.io/web-bluetooth/#dom-bluetoothremotegattdescriptor-writevalue
     fn WriteValue(&self, value: Vec<u8>) -> Rc<Promise> {
-        result_to_promise(self.global().r(), self.write_value(value))
+        result_to_promise(&self.global_scope(), self.write_value(value))
     }
 }
diff --git a/components/script/dom/bluetoothremotegattserver.rs b/components/script/dom/bluetoothremotegattserver.rs
index a9712216d61..703be681a23 100644
--- a/components/script/dom/bluetoothremotegattserver.rs
+++ b/components/script/dom/bluetoothremotegattserver.rs
@@ -138,7 +138,7 @@ impl BluetoothRemoteGATTServerMethods for BluetoothRemoteGATTServer {
     #[allow(unrooted_must_root)]
     // https://webbluetoothcg.github.io/web-bluetooth/#dom-bluetoothremotegattserver-connect
     fn Connect(&self) -> Rc<Promise> {
-        result_to_promise(self.global().r(), self.connect())
+        result_to_promise(&self.global_scope(), self.connect())
     }
 
     // https://webbluetoothcg.github.io/web-bluetooth/#dom-bluetoothremotegattserver-disconnect
@@ -161,7 +161,7 @@ impl BluetoothRemoteGATTServerMethods for BluetoothRemoteGATTServer {
     #[allow(unrooted_must_root)]
     // https://webbluetoothcg.github.io/web-bluetooth/#dom-bluetoothremotegattserver-getprimaryservice
     fn GetPrimaryService(&self, service: BluetoothServiceUUID) -> Rc<Promise> {
-        result_to_promise(self.global().r(), self.get_primary_service(service))
+        result_to_promise(&self.global_scope(), self.get_primary_service(service))
     }
 
     #[allow(unrooted_must_root)]
@@ -169,6 +169,6 @@ impl BluetoothRemoteGATTServerMethods for BluetoothRemoteGATTServer {
     fn GetPrimaryServices(&self,
                           service: Option<BluetoothServiceUUID>)
                           -> Rc<Promise> {
-        result_to_promise(self.global().r(), self.get_primary_services(service))
+        result_to_promise(&self.global_scope(), self.get_primary_services(service))
     }
 }
diff --git a/components/script/dom/bluetoothremotegattservice.rs b/components/script/dom/bluetoothremotegattservice.rs
index 29e2625b818..94082277768 100644
--- a/components/script/dom/bluetoothremotegattservice.rs
+++ b/components/script/dom/bluetoothremotegattservice.rs
@@ -236,7 +236,7 @@ impl BluetoothRemoteGATTServiceMethods for BluetoothRemoteGATTService {
     fn GetCharacteristic(&self,
                          characteristic: BluetoothCharacteristicUUID)
                          -> Rc<Promise> {
-        result_to_promise(self.global().r(), self.get_characteristic(characteristic))
+        result_to_promise(&self.global_scope(), self.get_characteristic(characteristic))
     }
 
     #[allow(unrooted_must_root)]
@@ -244,7 +244,7 @@ impl BluetoothRemoteGATTServiceMethods for BluetoothRemoteGATTService {
     fn GetCharacteristics(&self,
                           characteristic: Option<BluetoothCharacteristicUUID>)
                           -> Rc<Promise> {
-        result_to_promise(self.global().r(), self.get_characteristics(characteristic))
+        result_to_promise(&self.global_scope(), self.get_characteristics(characteristic))
     }
 
     #[allow(unrooted_must_root)]
@@ -252,7 +252,7 @@ impl BluetoothRemoteGATTServiceMethods for BluetoothRemoteGATTService {
     fn GetIncludedService(&self,
                           service: BluetoothServiceUUID)
                           -> Rc<Promise> {
-        result_to_promise(self.global().r(), self.get_included_service(service))
+        result_to_promise(&self.global_scope(), self.get_included_service(service))
     }
 
     #[allow(unrooted_must_root)]
@@ -260,6 +260,6 @@ impl BluetoothRemoteGATTServiceMethods for BluetoothRemoteGATTService {
     fn GetIncludedServices(&self,
                           service: Option<BluetoothServiceUUID>)
                           -> Rc<Promise> {
-        result_to_promise(self.global().r(), self.get_included_services(service))
+        result_to_promise(&self.global_scope(), self.get_included_services(service))
     }
 }