Revert of [debugger] do not predict step in target for liveedit.

src/builtins.cc

 // 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.
 
 #include "src/builtins.h"
 
 #include "src/api.h"
 #include "src/api-natives.h"
 #include "src/arguments.h"
 #include "src/base/once.h"
@@ skipping 2257 matching lines @@
                                        DebugCodegen::SAVE_RESULT_REGISTER);
 }
 
 
 static void Generate_Slot_DebugBreak(MacroAssembler* masm) {
   DebugCodegen::GenerateDebugBreakStub(masm,
                                        DebugCodegen::IGNORE_RESULT_REGISTER);
 }
 
 
+static void Generate_PlainReturn_LiveEdit(MacroAssembler* masm) {
+  DebugCodegen::GeneratePlainReturnLiveEdit(masm);
+}
+
+
 static void Generate_FrameDropper_LiveEdit(MacroAssembler* masm) {
   DebugCodegen::GenerateFrameDropperLiveEdit(masm);
 }
 
 
 Builtins::Builtins() : initialized_(false) {
   memset(builtins_, 0, sizeof(builtins_[0]) * builtin_count);
   memset(names_, 0, sizeof(names_[0]) * builtin_count);
 }
 
@@ skipping 209 matching lines @@
 BUILTIN_LIST_C(DEFINE_BUILTIN_ACCESSOR_C)
 BUILTIN_LIST_A(DEFINE_BUILTIN_ACCESSOR_A)
 BUILTIN_LIST_H(DEFINE_BUILTIN_ACCESSOR_H)
 BUILTIN_LIST_DEBUG_A(DEFINE_BUILTIN_ACCESSOR_A)
 #undef DEFINE_BUILTIN_ACCESSOR_C
 #undef DEFINE_BUILTIN_ACCESSOR_A
 
 
 }  // namespace internal
 }  // namespace v8