[crankshaft] Remove useless HCallFunction instruction.

src/crankshaft/hydrogen.h

Index: src/crankshaft/hydrogen.h
diff --git a/src/crankshaft/hydrogen.h b/src/crankshaft/hydrogen.h
index dd4b7c339afa369f42569297003a1fe9aad60a0c..1de26fb0f683ec13aabc3424e455a1e7d5d8ce92 100644
--- a/src/crankshaft/hydrogen.h
+++ b/src/crankshaft/hydrogen.h
@@ -2821,12 +2821,18 @@ class HOptimizedGraphBuilder : public HGraphBuilder, public AstVisitor {
   void AddCheckPrototypeMaps(Handle<JSObject> holder,
                              Handle<Map> receiver_map);
 
-  HInstruction* NewPlainFunctionCall(HValue* fun, int argument_count);
+  HInstruction* NewPlainFunctionCall(HValue* function, int argument_count);
 
-  HInstruction* NewArgumentAdaptorCall(HValue* fun, HValue* context,
-                                       int argument_count,
+  HInstruction* NewArgumentAdaptorCall(HValue* function, int argument_count,
                                        HValue* expected_param_count);
 
+  HInstruction* NewCallFunction(HValue* function, int argument_count,
+                                ConvertReceiverMode convert_mode);
+
+  HInstruction* NewCallFunctionViaIC(HValue* function, int argument_count,
+                                     ConvertReceiverMode convert_mode,
+                                     FeedbackVectorSlot slot);
+
   HInstruction* BuildCallConstantFunction(Handle<JSFunction> target,
                                           int argument_count);