Revert "Calls to HCheckFunction can be eliminated if the value is an HConstant"

src/hydrogen-instructions.h

Index: src/hydrogen-instructions.h
diff --git a/src/hydrogen-instructions.h b/src/hydrogen-instructions.h
index 9e8ba7665478e427be342b85716f47a39de86efb..ac7fc63a7d28f13437434d954c2fd04acecf4fc7 100644
--- a/src/hydrogen-instructions.h
+++ b/src/hydrogen-instructions.h
@@ -2838,8 +2838,6 @@ class HCheckFunction: public HUnaryOperation {
   virtual void PrintDataTo(StringStream* stream);
   virtual HType CalculateInferredType();
 
-  virtual HValue* Canonicalize();
-
 #ifdef DEBUG
   virtual void Verify();
 #endif
@@ -3413,11 +3411,6 @@ class HConstant: public HTemplateInstruction<0> {
     }
   }
 
-  bool UniqueValueIdsMatch(UniqueValueId other) {
-    if (!has_double_value_) return unique_id_ == other;
-    return false;
-  }
-
 #ifdef DEBUG
   virtual void Verify() { }
 #endif