Oilpan: Remove most WillBe types from the code base

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

Index: third_party/WebKit/Source/core/css/CSSUnicodeRangeValue.h
diff --git a/third_party/WebKit/Source/core/css/CSSUnicodeRangeValue.h b/third_party/WebKit/Source/core/css/CSSUnicodeRangeValue.h
index eabe25fdffc9dd8bee8443660800156fd5df61d6..10a783ddf0fc3a96d0127679ac10662bbe4a96f0 100644
--- a/third_party/WebKit/Source/core/css/CSSUnicodeRangeValue.h
+++ b/third_party/WebKit/Source/core/css/CSSUnicodeRangeValue.h
@@ -33,9 +33,9 @@ namespace blink {
 
 class CSSUnicodeRangeValue : public CSSValue {
 public:
-    static PassRefPtrWillBeRawPtr<CSSUnicodeRangeValue> create(UChar32 from, UChar32 to)
+    static RawPtr<CSSUnicodeRangeValue> create(UChar32 from, UChar32 to)
     {
-        return adoptRefWillBeNoop(new CSSUnicodeRangeValue(from, to));
+        return new CSSUnicodeRangeValue(from, to);
     }
 
     UChar32 from() const { return m_from; }