diff --git a/dom/bluetooth/bluedroid/hfp/BluetoothHfpManager.cpp b/dom/bluetooth/bluedroid/hfp/BluetoothHfpManager.cpp
index e8a948e48cf9..a8f06a9a1e9f 100644
--- a/dom/bluetooth/bluedroid/hfp/BluetoothHfpManager.cpp
+++ b/dom/bluetooth/bluedroid/hfp/BluetoothHfpManager.cpp
@@ -685,7 +685,7 @@ BluetoothHfpManager::HandleVolumeChanged(nsISupports* aSubject)
   // The string that we're interested in will be a JSON string that looks like:
   //  {"key":"volumeup", "value":10}
   //  {"key":"volumedown", "value":2}
-  RootedDictionary<dom::SettingChangeNotification> setting(nsContentUtils::RootingCx());
+  RootedDictionary<dom::SettingChangeNotification> setting(RootingCx());
   if (!WrappedJSToDictionary(aSubject, setting)) {
     return;
   }
@@ -751,7 +751,7 @@ BluetoothHfpManager::HandleVoiceConnectionChanged(uint32_t aClientId)
   mService = service;
 
   // Signal
-  JS::Rooted<JS::Value> value(dom::GetJSRuntime());
+  JS::Rooted<JS::Value> value(dom::RootingCx());
   voiceInfo->GetRelSignalStrength(&value);
   if (value.isNumber()) {
     mSignal = (int)ceil(value.toNumber() / 20.0);
diff --git a/dom/bluetooth/bluez/BluetoothHfpManager.cpp b/dom/bluetooth/bluez/BluetoothHfpManager.cpp
index f7e88e2f352a..812d7ff5fd92 100644
--- a/dom/bluetooth/bluez/BluetoothHfpManager.cpp
+++ b/dom/bluetooth/bluez/BluetoothHfpManager.cpp
@@ -582,7 +582,7 @@ BluetoothHfpManager::HandleVolumeChanged(nsISupports* aSubject)
   //  {"key":"volumedown", "value":2}
 
   RootedDictionary<dom::SettingChangeNotification>
-    setting(nsContentUtils::RootingCx());
+    setting(RootingCx());
 
   if (!WrappedJSToDictionary(aSubject, setting)) {
     return;
@@ -641,7 +641,7 @@ BluetoothHfpManager::HandleVoiceConnectionChanged(uint32_t aClientId)
   }
   UpdateCIND(CINDType::SERVICE, service);
 
-  JS::Rooted<JS::Value> value(dom::GetJSRuntime());
+  JS::Rooted<JS::Value> value(dom::RootingCx());
   voiceInfo->GetRelSignalStrength(&value);
   if (value.isNumber()) {
     uint8_t signal = ceil(value.toNumber() / 20.0);
diff --git a/dom/bluetooth/common/BluetoothReplyRunnable.cpp b/dom/bluetooth/common/BluetoothReplyRunnable.cpp
index 6891e6d7902c..013d2b1818a9 100644
--- a/dom/bluetooth/common/BluetoothReplyRunnable.cpp
+++ b/dom/bluetooth/common/BluetoothReplyRunnable.cpp
@@ -93,7 +93,7 @@ BluetoothReplyRunnable::Run()
   MOZ_ASSERT(NS_IsMainThread());
   MOZ_ASSERT(mReply);
 
-  JS::Rooted<JS::Value> v(nsContentUtils::RootingCx(), JS::UndefinedValue());
+  JS::Rooted<JS::Value> v(RootingCx(), JS::UndefinedValue());
 
   nsresult rv;
   if (mReply->type() != BluetoothReply::TBluetoothReplySuccess) {
diff --git a/dom/bluetooth/common/BluetoothService.cpp b/dom/bluetooth/common/BluetoothService.cpp
index d16ad7adacdc..dc49a5490e82 100644
--- a/dom/bluetooth/common/BluetoothService.cpp
+++ b/dom/bluetooth/common/BluetoothService.cpp
@@ -549,7 +549,7 @@ BluetoothService::HandleSettingsChanged(nsISupports* aSubject)
   // The string that we're interested in will be a JSON string that looks like:
   //  {"key":"bluetooth.enabled","value":true}
 
-  RootedDictionary<SettingChangeNotification> setting(nsContentUtils::RootingCx());
+  RootedDictionary<SettingChangeNotification> setting(RootingCx());
   if (!WrappedJSToDictionary(aSubject, setting)) {
     return NS_OK;
   }
diff --git a/dom/fmradio/FMRadioService.cpp b/dom/fmradio/FMRadioService.cpp
index 9f906083a75e..742dbedd3400 100644
--- a/dom/fmradio/FMRadioService.cpp
+++ b/dom/fmradio/FMRadioService.cpp
@@ -796,7 +796,7 @@ FMRadioService::Observe(nsISupports* aSubject,
 
   // The string that we're interested in will be a JSON string looks like:
   //  {"key":"airplaneMode.enabled","value":true}
-  RootedDictionary<dom::SettingChangeNotification> setting(nsContentUtils::RootingCx());
+  RootedDictionary<dom::SettingChangeNotification> setting(RootingCx());
   if (!WrappedJSToDictionary(aSubject, setting)) {
     return NS_OK;
   }
diff --git a/dom/system/gonk/AudioManager.cpp b/dom/system/gonk/AudioManager.cpp
index cce411b6f111..9e25770bcfa9 100644
--- a/dom/system/gonk/AudioManager.cpp
+++ b/dom/system/gonk/AudioManager.cpp
@@ -596,7 +596,7 @@ AudioManager::Observe(nsISupports* aSubject,
   // To process the volume control on each volume categories according to
   // change of settings
   else if (!strcmp(aTopic, MOZ_SETTINGS_CHANGE_ID)) {
-    RootedDictionary<dom::SettingChangeNotification> setting(nsContentUtils::RootingCx());
+    RootedDictionary<dom::SettingChangeNotification> setting(RootingCx());
     if (!WrappedJSToDictionary(aSubject, setting)) {
       return NS_OK;
     }
@@ -1135,7 +1135,7 @@ AudioManager::MaybeUpdateVolumeSettingToDatabase(bool aForce)
   }
 
   // Send events to update the Gaia volumes
-  JS::Rooted<JS::Value> value(nsContentUtils::RootingCx());
+  JS::Rooted<JS::Value> value(RootingCx());
   uint32_t volume = 0;
   for (uint32_t idx = 0; idx < MOZ_ARRAY_LENGTH(gVolumeData); ++idx) {
     int32_t streamType = gVolumeData[idx].mStreamType;
diff --git a/dom/system/gonk/AutoMounterSetting.cpp b/dom/system/gonk/AutoMounterSetting.cpp
index 7517c448377c..606bcce04dca 100644
--- a/dom/system/gonk/AutoMounterSetting.cpp
+++ b/dom/system/gonk/AutoMounterSetting.cpp
@@ -132,7 +132,7 @@ AutoMounterSetting::AutoMounterSetting()
   nsCOMPtr<nsISettingsServiceLock> lock;
   settingsService->CreateLock(nullptr, getter_AddRefs(lock));
   nsCOMPtr<nsISettingsServiceCallback> callback = new SettingsServiceCallback();
-  JS::Rooted<JS::Value> value(nsContentUtils::RootingCx());
+  JS::Rooted<JS::Value> value(RootingCx());
   value.setInt32(AUTOMOUNTER_DISABLE);
   lock->Set(UMS_MODE, value, callback, nullptr);
   value.setInt32(mStatus);
@@ -209,7 +209,7 @@ public:
     settingsService->CreateLock(nullptr, getter_AddRefs(lock));
     // lock may be null if this gets called during shutdown.
     if (lock) {
-      JS::Rooted<JS::Value> value(nsContentUtils::RootingCx(),
+      JS::Rooted<JS::Value> value(RootingCx(),
 				  JS::Int32Value(mStatus));
       lock->Set(UMS_STATUS, value, nullptr, nullptr);
     }
@@ -247,7 +247,7 @@ AutoMounterSetting::Observe(nsISupports* aSubject,
   // The string that we're interested in will be a JSON string that looks like:
   //  {"key":"ums.autoMount","value":true}
 
-  RootedDictionary<SettingChangeNotification> setting(nsContentUtils::RootingCx());
+  RootedDictionary<SettingChangeNotification> setting(RootingCx());
   if (!WrappedJSToDictionary(aSubject, setting)) {
     return NS_OK;
   }
diff --git a/dom/system/gonk/GonkGPSGeolocationProvider.cpp b/dom/system/gonk/GonkGPSGeolocationProvider.cpp
index e272f1fbfa00..c20fd69c84d0 100644
--- a/dom/system/gonk/GonkGPSGeolocationProvider.cpp
+++ b/dom/system/gonk/GonkGPSGeolocationProvider.cpp
@@ -1170,7 +1170,7 @@ GonkGPSGeolocationProvider::Observe(nsISupports* aSubject,
 
   if (!strcmp(aTopic, kMozSettingsChangedTopic)) {
     // Read changed setting value
-    RootedDictionary<SettingChangeNotification> setting(nsContentUtils::RootingCx());
+    RootedDictionary<SettingChangeNotification> setting(RootingCx());
     if (!WrappedJSToDictionary(aSubject, setting)) {
       return NS_OK;
     }