Oilpan: Remove most WillBe types from the code base

third_party/WebKit/Source/core/html/shadow/PickerIndicatorElement.h

Index: third_party/WebKit/Source/core/html/shadow/PickerIndicatorElement.h
diff --git a/third_party/WebKit/Source/core/html/shadow/PickerIndicatorElement.h b/third_party/WebKit/Source/core/html/shadow/PickerIndicatorElement.h
index 5a2b7a4bf49abb6325db717398f17f5d2ff5ae23..f7440d9a19f6fdda99e45eee44f9cc7bb13ce516 100644
--- a/third_party/WebKit/Source/core/html/shadow/PickerIndicatorElement.h
+++ b/third_party/WebKit/Source/core/html/shadow/PickerIndicatorElement.h
@@ -43,11 +43,11 @@ namespace blink {
 class HTMLInputElement;
 
 class PickerIndicatorElement final : public HTMLDivElement, public DateTimeChooserClient {
-    WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(PickerIndicatorElement);
+    USING_GARBAGE_COLLECTED_MIXIN(PickerIndicatorElement);
 public:
     // PickerIndicatorOwner implementer must call removePickerIndicatorOwner when
     // it doesn't handle event, e.g. at destruction.
-    class PickerIndicatorOwner : public WillBeGarbageCollectedMixin {
+    class PickerIndicatorOwner : public GarbageCollectedMixin {
     public:
         virtual ~PickerIndicatorOwner() { }
         virtual bool isPickerIndicatorOwnerDisabledOrReadOnly() const = 0;
@@ -58,7 +58,7 @@ public:
         virtual bool setupDateTimeChooserParameters(DateTimeChooserParameters&) = 0;
     };
 
-    static PassRefPtrWillBeRawPtr<PickerIndicatorElement> create(Document&, PickerIndicatorOwner&);
+    static RawPtr<PickerIndicatorElement> create(Document&, PickerIndicatorOwner&);
     ~PickerIndicatorElement() override;
     DECLARE_VIRTUAL_TRACE();
 
@@ -85,8 +85,8 @@ private:
 
     HTMLInputElement* hostInput();
 
-    RawPtrWillBeMember<PickerIndicatorOwner> m_pickerIndicatorOwner;
-    RefPtrWillBeMember<DateTimeChooser> m_chooser;
+    Member<PickerIndicatorOwner> m_pickerIndicatorOwner;
+    Member<DateTimeChooser> m_chooser;
 };
 
 DEFINE_TYPE_CASTS(PickerIndicatorElement, Element, element, element->isPickerIndicatorElement(), element.isPickerIndicatorElement());