Make HValue::ActualValue() traverse all idefs.

src/hydrogen-alias-analysis.h

Index: src/hydrogen-alias-analysis.h
diff --git a/src/hydrogen-alias-analysis.h b/src/hydrogen-alias-analysis.h
index 73e116e63e171e9a4fd8e1478a53ff1bb45e8236..21a54625ff8587a59532d26aa210a4423849f540 100644
--- a/src/hydrogen-alias-analysis.h
+++ b/src/hydrogen-alias-analysis.h
@@ -88,15 +88,6 @@ class HAliasAnalyzer : public ZoneObject {
   inline bool NoAlias(HValue* a, HValue* b) {
     return Query(a, b) == kNoAlias;
   }
-
-  // Returns the actual value of an instruction. In the case of a chain
-  // of informative definitions, return the root of the chain.
-  HValue* ActualValue(HValue* obj) {
-    while (obj->IsInformativeDefinition()) {  // Walk a chain of idefs.
-      obj = obj->RedefinedOperand();
-    }
-    return obj;
-  }
 };