[debug] remove StepFrame

test/debugger/test-api.js

 // Copyright 2016 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.
 
 "use strict";
 
 // If true, prints all messages sent and received by inspector.
 const printProtocolMessages = false;
 
 // The active wrapper instance.
@@ skipping 20 matching lines @@
     this.DebugEvent = { Break: 1,
                         Exception: 2,
                         AfterCompile: 3,
                         CompileError: 4,
                       };
 
     // The different types of steps.
     this.StepAction = { StepOut: 0,
                         StepNext: 1,
                         StepIn: 2,
-                        StepFrame: 3,
                       };
 
     // The different types of scripts matching enum ScriptType in objects.h.
     this.ScriptType = { Native: 0,
                         Extension: 1,
                         Normal: 2,
                         Wasm: 3,
                         Inspector: 4,
                       };
 
@@ skipping 359 matching lines @@
 
     this.breakpoints.add(breakpoint);
     return breakpoint;
   }
 
   execStatePrepareStep(action) {
     switch(action) {
       case this.StepAction.StepOut: this.stepOut(); break;
       case this.StepAction.StepNext: this.stepOver(); break;
       case this.StepAction.StepIn: this.stepInto(); break;
-      case this.StepAction.StepFrame: %PrepareStepFrame(); break;
       default: %AbortJS("Unsupported StepAction"); break;
     }
   }
 
   execStateScopeType(type) {
     switch (type) {
       case "global": return this.ScopeType.Global;
       case "local": return this.ScopeType.Local;
       case "with": return this.ScopeType.With;
       case "closure": return this.ScopeType.Closure;
@@ skipping 458 matching lines @@
     debug.instance = new DebugWrapper();
     debug.instance.enable();
   }
   return debug.instance;
 }});
 
 Object.defineProperty(debug, 'ScopeType', { get: function() {
   const instance = debug.Debug;
   return instance.ScopeType;
 }});