Oilpan: Remove most WillBe types from the code base

third_party/WebKit/Source/core/editing/commands/UnlinkCommand.h

Index: third_party/WebKit/Source/core/editing/commands/UnlinkCommand.h
diff --git a/third_party/WebKit/Source/core/editing/commands/UnlinkCommand.h b/third_party/WebKit/Source/core/editing/commands/UnlinkCommand.h
index 75df0a460186ea8bc738271a34793273bc162653..80956952d371ef6a7ebe21bf3afe5cf668a84d03 100644
--- a/third_party/WebKit/Source/core/editing/commands/UnlinkCommand.h
+++ b/third_party/WebKit/Source/core/editing/commands/UnlinkCommand.h
@@ -32,9 +32,9 @@ namespace blink {
 
 class UnlinkCommand final : public CompositeEditCommand {
 public:
-    static PassRefPtrWillBeRawPtr<UnlinkCommand> create(Document& document)
+    static RawPtr<UnlinkCommand> create(Document& document)
     {
-        return adoptRefWillBeNoop(new UnlinkCommand(document));
+        return (new UnlinkCommand(document));
     }
 
 private: