Handle StepIn for constructors through PrepareStep just like for regular calls

src/runtime/runtime.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_RUNTIME_RUNTIME_H_
 #define V8_RUNTIME_RUNTIME_H_
 
 #include "src/allocation.h"
 #include "src/objects.h"
 #include "src/unicode.h"
@@ skipping 73 matching lines @@
   F(DefineClass, 5, 1)                        \
   F(FinalizeClassDefinition, 2, 1)            \
   F(DefineClassMethod, 3, 1)                  \
   F(ClassGetSourceCode, 1, 1)                 \
   F(LoadFromSuper, 4, 1)                      \
   F(LoadKeyedFromSuper, 4, 1)                 \
   F(StoreToSuper_Strict, 4, 1)                \
   F(StoreToSuper_Sloppy, 4, 1)                \
   F(StoreKeyedToSuper_Strict, 4, 1)           \
   F(StoreKeyedToSuper_Sloppy, 4, 1)           \
-  F(HandleStepInForDerivedConstructors, 1, 1) \
   F(DefaultConstructorCallSuper, 2, 1)
 
 
 #define FOR_EACH_INTRINSIC_COLLECTIONS(F) \
   F(StringGetRawHashField, 1, 1)          \
   F(TheHole, 0, 1)                        \
   F(JSCollectionGetTable, 1, 1)           \
   F(GenericHash, 1, 1)                    \
   F(SetInitialize, 1, 1)                  \
   F(SetGrow, 1, 1)                        \
@@ skipping 1154 matching lines @@
 
 class DeclareGlobalsEvalFlag : public BitField<bool, 0, 1> {};
 class DeclareGlobalsNativeFlag : public BitField<bool, 1, 1> {};
 STATIC_ASSERT(LANGUAGE_END == 3);
 class DeclareGlobalsLanguageMode : public BitField<LanguageMode, 2, 2> {};
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_RUNTIME_RUNTIME_H_