Oilpan: Remove most WillBe types from the code base

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

Index: third_party/WebKit/Source/core/css/KeyframeStyleRuleCSSStyleDeclaration.h
diff --git a/third_party/WebKit/Source/core/css/KeyframeStyleRuleCSSStyleDeclaration.h b/third_party/WebKit/Source/core/css/KeyframeStyleRuleCSSStyleDeclaration.h
index 58576de90cf388ee268e1e39834394ed2abd8137..f0b389702d14355e9fa45cf8e19a8548c4f735a6 100644
--- a/third_party/WebKit/Source/core/css/KeyframeStyleRuleCSSStyleDeclaration.h
+++ b/third_party/WebKit/Source/core/css/KeyframeStyleRuleCSSStyleDeclaration.h
@@ -13,9 +13,9 @@ class CSSKeyframeRule;
 
 class KeyframeStyleRuleCSSStyleDeclaration final : public StyleRuleCSSStyleDeclaration {
 public:
-    static PassRefPtrWillBeRawPtr<KeyframeStyleRuleCSSStyleDeclaration> create(MutableStylePropertySet& propertySet, CSSKeyframeRule* parentRule)
+    static RawPtr<KeyframeStyleRuleCSSStyleDeclaration> create(MutableStylePropertySet& propertySet, CSSKeyframeRule* parentRule)
     {
-        return adoptRefWillBeNoop(new KeyframeStyleRuleCSSStyleDeclaration(propertySet, parentRule));
+        return new KeyframeStyleRuleCSSStyleDeclaration(propertySet, parentRule);
     }
 
 private: