first step to remove unsafe handles

src/d8-debug.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 59 matching lines @@
   Local<Function> to_json_fun =
       Function::Cast(*event_data->Get(to_json_fun_name));
   Local<Value> event_json = to_json_fun->Call(event_data, 0, NULL);
   if (try_catch.HasCaught()) {
     Shell::ReportException(isolate, &try_catch);
     return;
   }
 
   // Print the event details.
   Handle<Object> details =
-      Shell::DebugMessageDetails(Handle<String>::Cast(event_json));
+      Shell::DebugMessageDetails(isolate, Handle<String>::Cast(event_json));
   if (try_catch.HasCaught()) {
     Shell::ReportException(isolate, &try_catch);
     return;
   }
   String::Utf8Value str(details->Get(String::New("text")));
   if (str.length() == 0) {
     // Empty string is used to signal not to process this event.
     return;
   }
   printf("%s\n", *str);
@@ skipping 16 matching lines @@
     char* str = fgets(command, kBufferSize, stdin);
     if (str == NULL) break;
 
     // Ignore empty commands.
     if (strlen(command) == 0) continue;
 
     TryCatch try_catch;
 
     // Convert the debugger command to a JSON debugger request.
     Handle<Value> request =
-        Shell::DebugCommandToJSONRequest(String::New(command));
+        Shell::DebugCommandToJSONRequest(isolate, String::New(command));
     if (try_catch.HasCaught()) {
       Shell::ReportException(isolate, &try_catch);
       continue;
     }
 
     // If undefined is returned the command was handled internally and there is
     // no JSON to send.
     if (request->IsUndefined()) {
       continue;
     }
@@ skipping 11 matching lines @@
     fun = Handle<Function>::Cast(cmd_processor->Get(fun_name));
     args[0] = request;
     Handle<Value> response_val = fun->Call(cmd_processor, kArgc, args);
     if (try_catch.HasCaught()) {
       Shell::ReportException(isolate, &try_catch);
       continue;
     }
     Handle<String> response = Handle<String>::Cast(response_val);
 
     // Convert the debugger response into text details and the running state.
-    Handle<Object> response_details = Shell::DebugMessageDetails(response);
+    Handle<Object> response_details =
+        Shell::DebugMessageDetails(isolate, response);
     if (try_catch.HasCaught()) {
       Shell::ReportException(isolate, &try_catch);
       continue;
     }
     String::Utf8Value text_str(response_details->Get(String::New("text")));
     if (text_str.length() > 0) {
       printf("%s\n", *text_str);
     }
     running =
         response_details->Get(String::New("running"))->ToBoolean()->Value();
@@ skipping 114 matching lines @@
 }
 
 
 void RemoteDebugger::HandleMessageReceived(char* message) {
   Locker lock(isolate_);
   HandleScope scope(isolate_);
 
   // Print the event details.
   TryCatch try_catch;
   Handle<Object> details =
-      Shell::DebugMessageDetails(Handle<String>::Cast(String::New(message)));
+      Shell::DebugMessageDetails(isolate_,
+                                 Handle<String>::Cast(String::New(message)));
   if (try_catch.HasCaught()) {
     Shell::ReportException(isolate_, &try_catch);
     PrintPrompt();
     return;
   }
   String::Utf8Value str(details->Get(String::New("text")));
   if (str.length() == 0) {
     // Empty string is used to signal not to process this event.
     return;
   }
   if (*str != NULL) {
     printf("%s\n", *str);
   } else {
     printf("???\n");
   }
 
   bool is_running = details->Get(String::New("running"))->ToBoolean()->Value();
   PrintPrompt(is_running);
 }
 
 
 void RemoteDebugger::HandleKeyboardCommand(char* command) {
   Locker lock(isolate_);
   HandleScope scope(isolate_);
 
   // Convert the debugger command to a JSON debugger request.
   TryCatch try_catch;
   Handle<Value> request =
-      Shell::DebugCommandToJSONRequest(String::New(command));
+      Shell::DebugCommandToJSONRequest(isolate_, String::New(command));
   if (try_catch.HasCaught()) {
     Shell::ReportException(isolate_, &try_catch);
     PrintPrompt();
     return;
   }
 
   // If undefined is returned the command was handled internally and there is
   // no JSON to send.
   if (request->IsUndefined()) {
     PrintPrompt();
@@ skipping 39 matching lines @@
     // Pass the keyboard command to the main thread.
     remote_debugger_->KeyboardCommand(
         i::SmartArrayPointer<char>(i::StrDup(command)));
   }
 }
 
 
 }  // namespace v8
 
 #endif  // ENABLE_DEBUGGER_SUPPORT