[debugger] Removed unused GetStepInPositions method

src/debug/mirrors.js

 // Copyright 2006-2012 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.
 
 (function(global, utils) {
 "use strict";
 
 // ----------------------------------------------------------------------------
 // Imports
 
@@ skipping 1783 matching lines @@
 
 
 FrameDetails.prototype.scopeCount = function() {
   if (IS_UNDEFINED(this.scopeCount_)) {
     this.scopeCount_ = %GetScopeCount(this.break_id_, this.frameId());
   }
   return this.scopeCount_;
 };
 
 
-FrameDetails.prototype.stepInPositionsImpl = function() {
-  return %GetStepInPositions(this.break_id_, this.frameId());
-};
-
-
 /**
  * Mirror object for stack frames.
  * @param {number} break_id The break id in the VM for which this frame is
        valid
  * @param {number} index The frame index (top frame is index 0)
  * @constructor
  * @extends Mirror
  */
 function FrameMirror(break_id, index) {
   %_Call(Mirror, this, MirrorType.FRAME_TYPE);
@@ skipping 159 matching lines @@
                                           this.details_.inlinedFrameIndex(),
                                           !!opt_ignore_nested_scopes);
   var result = [];
   for (var i = 0; i < scopeDetails.length; ++i) {
     result.push(new ScopeMirror(this, UNDEFINED, i, scopeDetails[i]));
   }
   return result;
 };
 
 
-FrameMirror.prototype.stepInPositions = function() {
-  var script = this.func().script();
-  var funcOffset = this.func().sourcePosition_();
-
-  var stepInRaw = this.details_.stepInPositionsImpl();
-  var result = [];
-  if (stepInRaw) {
-    for (var i = 0; i < stepInRaw.length; i++) {
-      var posStruct = {};
-      var offset = script.locationFromPosition(funcOffset + stepInRaw[i],
-                                               true);
-      serializeLocationFields(offset, posStruct);
-      var item = {
-        position: posStruct
-      };
-      result.push(item);
-    }
-  }
-
-  return result;
-};
-
-
 FrameMirror.prototype.evaluate = function(source, disable_break,
                                           opt_context_object) {
   return MakeMirror(%DebugEvaluate(this.break_id_,
                                    this.details_.frameId(),
                                    this.details_.inlinedFrameIndex(),
                                    source,
                                    TO_BOOLEAN(disable_break),
                                    opt_context_object));
 };
 
@@ skipping 1049 matching lines @@
 // Functions needed by the debugger runtime.
 utils.InstallFunctions(utils, DONT_ENUM, [
   "ClearMirrorCache", ClearMirrorCache
 ]);
 
 // Export to debug.js
 utils.Export(function(to) {
   to.MirrorType = MirrorType;
 });
 })