Oilpan: Remove most WillBe types from the code base

third_party/WebKit/Source/core/css/CSSVariableReferenceValue.h

Index: third_party/WebKit/Source/core/css/CSSVariableReferenceValue.h
diff --git a/third_party/WebKit/Source/core/css/CSSVariableReferenceValue.h b/third_party/WebKit/Source/core/css/CSSVariableReferenceValue.h
index 187c8fb38e5b06ebc08f2e9af38aa13fc00aef54..d61356acad4bb507c85fdcd10d4a06ab90a15f74 100644
--- a/third_party/WebKit/Source/core/css/CSSVariableReferenceValue.h
+++ b/third_party/WebKit/Source/core/css/CSSVariableReferenceValue.h
@@ -13,9 +13,9 @@ namespace blink {
 
 class CSSVariableReferenceValue : public CSSValue {
 public:
-    static PassRefPtrWillBeRawPtr<CSSVariableReferenceValue> create(PassRefPtr<CSSVariableData> data)
+    static RawPtr<CSSVariableReferenceValue> create(PassRefPtr<CSSVariableData> data)
     {
-        return adoptRefWillBeNoop(new CSSVariableReferenceValue(data));
+        return new CSSVariableReferenceValue(data);
     }
 
     CSSVariableData* variableDataValue() const