Reland of [debugger] do not restart frames that reference new.target for liveedit.

src/debug/liveedit.js

 // 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.
 
 // LiveEdit feature implementation. The script should be executed after
 // debug.js.
 
 // A LiveEdit namespace. It contains functions that modifies JavaScript code
 // according to changes of script source (if possible).
 //
@@ skipping 124 matching lines @@
         updated: false
     };
 
     if (preview_only) {
       return preview_description;
     }
 
     HarvestTodo(root_old_node);
 
     // Collect shared infos for functions whose code need to be patched.
-    var replaced_function_infos = new GlobalArray();
+    var replaced_function_old_infos = new GlobalArray();
+    var replaced_function_new_infos = new GlobalArray();
     for (var i = 0; i < replace_code_list.length; i++) {
-      var live_shared_function_infos =
-          replace_code_list[i].live_shared_function_infos;
+      var old_infos = replace_code_list[i].live_shared_function_infos;
+      var new_info =
+          replace_code_list[i].corresponding_node.info.shared_function_info;
 
-      if (live_shared_function_infos) {
-        for (var j = 0; j < live_shared_function_infos.length; j++) {
-          replaced_function_infos.push(live_shared_function_infos[j]);
+      if (old_infos) {
+        for (var j = 0; j < old_infos.length; j++) {
+          replaced_function_old_infos.push(old_infos[j]);
+          replaced_function_new_infos.push(new_info);
         }
       }
     }
 
     // We haven't changed anything before this line yet.
     // Committing all changes.
 
     // Check that function being patched is not currently on stack or drop them.
     var dropped_functions_number =
-        CheckStackActivations(replaced_function_infos, change_log);
+        CheckStackActivations(replaced_function_old_infos,
+                              replaced_function_new_infos,
+                              change_log);
 
     // Our current implementation requires client to manually issue "step in"
     // command for correct stack state if the stack was modified.
     preview_description.stack_modified = dropped_functions_number != 0;
 
     // Start with breakpoints. Convert their line/column positions and
     // temporary remove.
     var break_points_restorer = TemporaryRemoveBreakPoints(script, change_log);
 
     var old_script;
@@ skipping 730 matching lines @@
     // No differences. Return undefined.
     return;
   }
 
   // Minifier forward declaration.
   var FunctionPatchabilityStatus;
 
   // For array of wrapped shared function infos checks that none of them
   // have activations on stack (of any thread). Throws a Failure exception
   // if this proves to be false.
-  function CheckStackActivations(shared_wrapper_list, change_log) {
-    var shared_list = new GlobalArray();
-    for (var i = 0; i < shared_wrapper_list.length; i++) {
-      shared_list[i] = shared_wrapper_list[i].info;
+  function CheckStackActivations(old_shared_wrapper_list,
+                                 new_shared_list,
+                                 change_log) {
+    var old_shared_list = new GlobalArray();
+    for (var i = 0; i < old_shared_wrapper_list.length; i++) {
+      old_shared_list[i] = old_shared_wrapper_list[i].info;
     }
-    var result = %LiveEditCheckAndDropActivations(shared_list, true);
-    if (result[shared_list.length]) {
+    var result = %LiveEditCheckAndDropActivations(
+                     old_shared_list, new_shared_list, true);
+    if (result[old_shared_wrapper_list.length]) {
       // Extra array element may contain error message.
-      throw new Failure(result[shared_list.length]);
+      throw new Failure(result[old_shared_wrapper_list.length]);
     }
 
     var problems = new GlobalArray();
     var dropped = new GlobalArray();
-    for (var i = 0; i < shared_list.length; i++) {
-      var shared = shared_wrapper_list[i];
+    for (var i = 0; i < old_shared_list.length; i++) {
+      var shared = old_shared_wrapper_list[i];
       if (result[i] == FunctionPatchabilityStatus.REPLACED_ON_ACTIVE_STACK) {
         dropped.push({ name: shared.function_name } );
       } else if (result[i] != FunctionPatchabilityStatus.AVAILABLE_FOR_PATCH) {
         var description = {
             name: shared.function_name,
             start_pos: shared.start_position,
             end_pos: shared.end_position,
             replace_problem:
                 FunctionPatchabilityStatus.SymbolName(result[i])
         };
@@ skipping 12 matching lines @@
   }
 
   // A copy of the FunctionPatchabilityStatus enum from liveedit.h
   var FunctionPatchabilityStatus = {
       AVAILABLE_FOR_PATCH: 1,
       BLOCKED_ON_ACTIVE_STACK: 2,
       BLOCKED_ON_OTHER_STACK: 3,
       BLOCKED_UNDER_NATIVE_CODE: 4,
       REPLACED_ON_ACTIVE_STACK: 5,
       BLOCKED_UNDER_GENERATOR: 6,
-      BLOCKED_ACTIVE_GENERATOR: 7
+      BLOCKED_ACTIVE_GENERATOR: 7,
+      BLOCKED_NO_NEW_TARGET_ON_RESTART: 8
   };
 
   FunctionPatchabilityStatus.SymbolName = function(code) {
     var enumeration = FunctionPatchabilityStatus;
     for (var name in enumeration) {
       if (enumeration[name] == code) {
         return name;
       }
     }
   };
@@ skipping 143 matching lines @@
 
   LiveEdit.TestApi = {
     PosTranslator: PosTranslator,
     CompareStrings: CompareStrings,
     ApplySingleChunkPatch: ApplySingleChunkPatch
   };
 
   global.Debug.LiveEdit = LiveEdit;
 
 })