[debugger] Removed unused GetStepInPositions method

src/runtime/runtime-debug.cc

 // Copyright 2014 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.
 
 #include "src/runtime/runtime-utils.h"
 
 #include "src/arguments.h"
 #include "src/debug/debug.h"
 #include "src/debug/debug-evaluate.h"
 #include "src/debug/debug-frames.h"
@@ skipping 722 matching lines @@
   // Count the visible scopes.
   int n = 0;
   for (ScopeIterator it(isolate, &frame_inspector); !it.Done(); it.Next()) {
     n++;
   }
 
   return Smi::FromInt(n);
 }
 
 
-// Returns the list of step-in positions (text offset) in a function of the
-// stack frame in a range from the current debug break position to the end
-// of the corresponding statement.
-RUNTIME_FUNCTION(Runtime_GetStepInPositions) {
-  HandleScope scope(isolate);
-  DCHECK(args.length() == 2);
-  CONVERT_NUMBER_CHECKED(int, break_id, Int32, args[0]);
-  RUNTIME_ASSERT(isolate->debug()->CheckExecutionState(break_id));
-
-  CONVERT_SMI_ARG_CHECKED(wrapped_id, 1);
-
-  // Get the frame where the debugging is performed.
-  StackFrame::Id id = DebugFrameHelper::UnwrapFrameId(wrapped_id);
-  JavaScriptFrameIterator frame_it(isolate, id);
-  RUNTIME_ASSERT(!frame_it.done());
-
-  List<int> positions;
-  isolate->debug()->GetStepinPositions(frame_it.frame(), id, &positions);
-  Factory* factory = isolate->factory();
-  Handle<FixedArray> array = factory->NewFixedArray(positions.length());
-  for (int i = 0; i < positions.length(); ++i) {
-    array->set(i, Smi::FromInt(positions[i]));
-  }
-  return *factory->NewJSArrayWithElements(array, FAST_SMI_ELEMENTS);
-}
-
-
 // Return an array with scope details
 // args[0]: number: break id
 // args[1]: number: frame index
 // args[2]: number: inlined frame index
 // args[3]: number: scope index
 //
 // The array returned contains the following information:
 // 0: Scope type
 // 1: Scope object
 RUNTIME_FUNCTION(Runtime_GetScopeDetails) {
@@ skipping 895 matching lines @@
   return Smi::FromInt(isolate->debug()->is_active());
 }
 
 
 RUNTIME_FUNCTION(Runtime_DebugBreakInOptimizedCode) {
   UNIMPLEMENTED();
   return NULL;
 }
 }  // namespace internal
 }  // namespace v8