Oilpan: Remove most WillBe types from the code base

third_party/WebKit/Source/web/ExternalPopupMenuTest.cpp

Index: third_party/WebKit/Source/web/ExternalPopupMenuTest.cpp
diff --git a/third_party/WebKit/Source/web/ExternalPopupMenuTest.cpp b/third_party/WebKit/Source/web/ExternalPopupMenuTest.cpp
index 407c7f6821772e8de83f3385349d77e51ff31b6c..ff9d3aa028924dbe5e4c65f12e610f99fd7983fa 100644
--- a/third_party/WebKit/Source/web/ExternalPopupMenuTest.cpp
+++ b/third_party/WebKit/Source/web/ExternalPopupMenuTest.cpp
@@ -33,7 +33,7 @@ protected:
     void SetUp() override
     {
         m_dummyPageHolder = DummyPageHolder::create(IntSize(800, 600));
-        RefPtrWillBeRawPtr<HTMLSelectElement> element = HTMLSelectElement::create(m_dummyPageHolder->document());
+        RawPtr<HTMLSelectElement> element = HTMLSelectElement::create(m_dummyPageHolder->document());
         // Set the 4th an 5th items to have "display: none" property
         element->setInnerHTML("<option><option><option><option style='display:none;'><option style='display:none;'><option><option>", ASSERT_NO_EXCEPTION);
         m_dummyPageHolder->document().body()->appendChild(element.get(), ASSERT_NO_EXCEPTION);
@@ -42,7 +42,7 @@ protected:
     }
 
     OwnPtr<DummyPageHolder> m_dummyPageHolder;
-    RefPtrWillBePersistent<HTMLSelectElement> m_ownerElement;
+    Persistent<HTMLSelectElement> m_ownerElement;
 };
 
 TEST_F(ExternalPopupMenuDisplayNoneItemsTest, PopupMenuInfoSizeTest)