[debugger] flood function for stepping before calling it.

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 182 matching lines @@
   F(DebugGetPrototype, 1, 1)                   \
   F(DebugSetScriptSource, 2, 1)                \
   F(FunctionGetInferredName, 1, 1)             \
   F(FunctionGetDebugName, 1, 1)                \
   F(GetFunctionCodePositionFromSource, 2, 1)   \
   F(ExecuteInDebugContext, 1, 1)               \
   F(GetDebugContext, 0, 1)                     \
   F(CollectGarbage, 1, 1)                      \
   F(GetHeapUsage, 0, 1)                        \
   F(GetScript, 1, 1)                           \
-  F(DebugCallbackSupportsStepping, 1, 1)       \
   F(DebugPrepareStepInIfStepping, 1, 1)        \
-  F(DebugPushPromise, 3, 1)                    \
+  F(DebugPushPromise, 2, 1)                    \
   F(DebugPopPromise, 0, 1)                     \
   F(DebugPromiseEvent, 1, 1)                   \
   F(DebugAsyncTaskEvent, 1, 1)                 \
   F(DebugIsActive, 0, 1)                       \
   F(DebugBreakInOptimizedCode, 0, 1)
 
 
 #define FOR_EACH_INTRINSIC_FORIN(F) \
   F(ForInDone, 2, 1)                \
   F(ForInFilter, 2, 1)              \
@@ skipping 1046 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_