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-              r179357
+              r179392
 /*
  * Copyright (C) 2014, 2015 Apple Inc. All rights reserved.
+ * Copyright (C) 2014 Apple Inc. All rights reserved.
+ *
  * Redistribution and use in source and binary forms, with or without
 …
 //
 // This class serves as a kind of union over these four things. It does so by just holding a
+// JSCell*. We determine which of the modes its in by doing type checks on the cell. Note that we
+// cannot use WriteBarrier<> here because this gets used inside the compiler.
+// JSCell*. We determine which of the modes its in by doing type checks on the cell. Note that there
+// is no lifecycle management for the cell because this class is always used in contexts where we
+// either do custom weak reference logic over instances of this class (see CallEdgeProfile), or we
+// are inside the compiler and we assume that the compiler runs in between collections and so can
+// touch the heap without notifying anyone.
 class CallVariant {
 …
 typedef Vector<CallVariant, 1> CallVariantList;
-// Returns a new variant list by attempting to either append the given variant or merge it with one
-// of the variants we already have by despecifying closures.
-CallVariantList variantListWithVariant(const CallVariantList&, CallVariant);
-// Returns a new list where every element is despecified, and the list is deduplicated.
-CallVariantList despecifiedVariantList(const CallVariantList&);
 } // namespace JSC

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Changeset 179392 in webkit for trunk/Source/JavaScriptCore/bytecode/CallVariant.h