Oilpan: Remove most WillBe types from the code base

third_party/WebKit/Source/modules/device_orientation/DeviceOrientationController.h

Index: third_party/WebKit/Source/modules/device_orientation/DeviceOrientationController.h
diff --git a/third_party/WebKit/Source/modules/device_orientation/DeviceOrientationController.h b/third_party/WebKit/Source/modules/device_orientation/DeviceOrientationController.h
index b033d7976aa3f29a6ece9fe29dc1b3eea78d13a2..006f32814d809a85318c5d17de849ba9108ad260 100644
--- a/third_party/WebKit/Source/modules/device_orientation/DeviceOrientationController.h
+++ b/third_party/WebKit/Source/modules/device_orientation/DeviceOrientationController.h
@@ -15,8 +15,8 @@ class DeviceOrientationData;
 class DeviceOrientationDispatcher;
 class Event;
 
-class MODULES_EXPORT DeviceOrientationController : public DeviceSingleWindowEventController, public WillBeHeapSupplement<Document> {
-    WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(DeviceOrientationController);
+class MODULES_EXPORT DeviceOrientationController : public DeviceSingleWindowEventController, public HeapSupplement<Document> {
+    USING_GARBAGE_COLLECTED_MIXIN(DeviceOrientationController);
 public:
     ~DeviceOrientationController() override;
 
@@ -44,13 +44,13 @@ private:
     bool hasLastData() override;
 
     // Inherited from DeviceSingleWindowEventController.
-    PassRefPtrWillBeRawPtr<Event> lastEvent() const override;
+    RawPtr<Event> lastEvent() const override;
     const AtomicString& eventTypeName() const override;
     bool isNullEvent(Event*) const override;
 
     DeviceOrientationData* lastData() const;
 
-    PersistentWillBeMember<DeviceOrientationData> m_overrideOrientationData;
+    Member<DeviceOrientationData> m_overrideOrientationData;
 };
 
 } // namespace blink