diff --git a/components/script/dom/audiobuffersourcenode.rs b/components/script/dom/audiobuffersourcenode.rs
index 3a1bcf6e914..64ca58b5bc9 100644
--- a/components/script/dom/audiobuffersourcenode.rs
+++ b/components/script/dom/audiobuffersourcenode.rs
@@ -7,12 +7,13 @@ use dom::audioparam::{AudioParam, AudioParamImpl};
 use dom::audioscheduledsourcenode::AudioScheduledSourceNode;
 use dom::baseaudiocontext::BaseAudioContext;
 use dom::bindings::codegen::Bindings::AudioBufferSourceNodeBinding;
-use dom::bindings::codegen::Bindings::AudioBufferSourceNodeBinding::AudioBufferSourceOptions;
 use dom::bindings::codegen::Bindings::AudioBufferSourceNodeBinding::AudioBufferSourceNodeMethods;
+use dom::bindings::codegen::Bindings::AudioBufferSourceNodeBinding::AudioBufferSourceOptions;
 use dom::bindings::codegen::Bindings::AudioParamBinding::AutomationRate;
 use dom::bindings::codegen::Bindings::AudioNodeBinding::AudioNodeOptions;
 use dom::bindings::codegen::Bindings::AudioNodeBinding::{ChannelCountMode, ChannelInterpretation};
-use dom::bindings::codegen::Bindings::AudioScheduledSourceNodeBinding::AudioScheduledSourceNodeBinding::AudioScheduledSourceNodeMethods;
+use dom::bindings::codegen::Bindings::AudioScheduledSourceNodeBinding::
+    AudioScheduledSourceNodeBinding::AudioScheduledSourceNodeMethods;
 use dom::bindings::error::{Error, Fallible};
 use dom::bindings::inheritance::Castable;
 use dom::bindings::num::Finite;
@@ -46,13 +47,12 @@ pub struct AudioBufferSourceNode {
 
 impl AudioBufferSourceNode {
     #[allow(unrooted_must_root)]
-    #[allow(unsafe_code)]
     fn new_inherited(
         window: &Window,
         context: &BaseAudioContext,
         options: &AudioBufferSourceOptions,
         ) -> AudioBufferSourceNode {
-        let mut node_options = unsafe { AudioNodeOptions::empty(window.get_cx()) };
+        let mut node_options = AudioNodeOptions::empty();
         node_options.channelCount = Some(2);
         node_options.channelCountMode = Some(ChannelCountMode::Max);
         node_options.channelInterpretation = Some(ChannelInterpretation::Speakers);
diff --git a/components/script/dom/baseaudiocontext.rs b/components/script/dom/baseaudiocontext.rs
index 7f65eb04cbd..9a5310f70e8 100644
--- a/components/script/dom/baseaudiocontext.rs
+++ b/components/script/dom/baseaudiocontext.rs
@@ -86,7 +86,6 @@ pub struct BaseAudioContext {
 
 impl BaseAudioContext {
     #[allow(unrooted_must_root)]
-    #[allow(unsafe_code)]
     pub fn new_inherited(
         global: &GlobalScope,
         options: BaseAudioContextOptions,
@@ -109,7 +108,7 @@ impl BaseAudioContext {
             state: Cell::new(AudioContextState::Suspended),
         };
 
-        let mut options = unsafe { AudioNodeOptions::empty(global.get_cx()) };
+        let mut options = AudioNodeOptions::empty();
         options.channelCount = Some(2);
         options.channelCountMode = Some(ChannelCountMode::Explicit);
         options.channelInterpretation = Some(ChannelInterpretation::Speakers);
@@ -287,21 +286,13 @@ impl BaseAudioContextMethods for BaseAudioContext {
     event_handler!(statechange, GetOnstatechange, SetOnstatechange);
 
     /// https://webaudio.github.io/web-audio-api/#dom-baseaudiocontext-createoscillator
-    #[allow(unsafe_code)]
     fn CreateOscillator(&self) -> DomRoot<OscillatorNode> {
-        let global = self.global();
-        let window = global.as_window();
-        let options = unsafe { OscillatorOptions::empty(window.get_cx()) };
-        OscillatorNode::new(&window, &self, &options)
+        OscillatorNode::new(&self.global().as_window(), &self, &OscillatorOptions::empty())
     }
 
     /// https://webaudio.github.io/web-audio-api/#dom-baseaudiocontext-creategain
-    #[allow(unsafe_code)]
     fn CreateGain(&self) -> DomRoot<GainNode> {
-        let global = self.global();
-        let window = global.as_window();
-        let options = unsafe { GainOptions::empty(window.get_cx()) };
-        GainNode::new(&window, &self, &options)
+        GainNode::new(&self.global().as_window(), &self, &GainOptions::empty())
     }
 
     /// https://webaudio.github.io/web-audio-api/#dom-baseaudiocontext-createbuffer
@@ -315,16 +306,11 @@ impl BaseAudioContextMethods for BaseAudioContext {
                 *sample_rate <= 0. {
                     return Err(Error::NotSupported);
                 }
-        let global = self.global();
-        Ok(AudioBuffer::new(&global.as_window(), number_of_channels, length, *sample_rate, None))
+        Ok(AudioBuffer::new(&self.global().as_window(), number_of_channels, length, *sample_rate, None))
     }
 
-    #[allow(unsafe_code)]
     fn CreateBufferSource(&self) -> DomRoot<AudioBufferSourceNode> {
-        let global = self.global();
-        // XXX Can we do this implementing Default?
-        let options = unsafe { AudioBufferSourceOptions::empty(global.get_cx()) };
-        AudioBufferSourceNode::new(&global.as_window(), &self, &options)
+        AudioBufferSourceNode::new(&self.global().as_window(), &self, &AudioBufferSourceOptions::empty())
     }
 
     #[allow(unrooted_must_root)]
diff --git a/components/script/dom/gainnode.rs b/components/script/dom/gainnode.rs
index 6b43651231d..3bb2c573233 100644
--- a/components/script/dom/gainnode.rs
+++ b/components/script/dom/gainnode.rs
@@ -31,14 +31,13 @@ pub struct GainNode {
 }
 
 impl GainNode {
-    #[allow(unsafe_code)]
     #[allow(unrooted_must_root)]
     pub fn new_inherited(
         window: &Window,
         context: &BaseAudioContext,
         gain_options: &GainOptions,
         ) -> GainNode {
-        let mut node_options = unsafe { AudioNodeOptions::empty(window.get_cx()) };
+        let mut node_options = AudioNodeOptions::empty();
         node_options.channelCount = Some(2);
         node_options.channelCountMode = Some(ChannelCountMode::Max);
         node_options.channelInterpretation = Some(ChannelInterpretation::Speakers);
diff --git a/components/script/dom/oscillatornode.rs b/components/script/dom/oscillatornode.rs
index 0440111410a..adb9cc778bc 100644
--- a/components/script/dom/oscillatornode.rs
+++ b/components/script/dom/oscillatornode.rs
@@ -38,13 +38,12 @@ pub struct OscillatorNode {
 
 impl OscillatorNode {
     #[allow(unrooted_must_root)]
-    #[allow(unsafe_code)]
     pub fn new_inherited(
         window: &Window,
         context: &BaseAudioContext,
         oscillator_options: &OscillatorOptions,
         ) -> OscillatorNode {
-        let mut node_options = unsafe { AudioNodeOptions::empty(window.get_cx()) };
+        let mut node_options = AudioNodeOptions::empty();
         node_options.channelCount = Some(2);
         node_options.channelCountMode = Some(ChannelCountMode::Max);
         node_options.channelInterpretation = Some(ChannelInterpretation::Speakers);