[inspector] introduced stepIntoAsync for chained callbacks

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/compiler.h"
 #include "src/debug/debug-evaluate.h"
 #include "src/debug/debug-frames.h"
@@ skipping 1815 matching lines @@
 }
 
 RUNTIME_FUNCTION(Runtime_DebugPushPromise) {
   DCHECK_EQ(1, args.length());
   HandleScope scope(isolate);
   CONVERT_ARG_HANDLE_CHECKED(JSObject, promise, 0);
   isolate->PushPromise(promise);
   return isolate->heap()->undefined_value();
 }
 
+RUNTIME_FUNCTION(Runtime_DebugSetNonBreakableAsyncEvents) {
+  DCHECK_EQ(1, args.length());
+  HandleScope scope(isolate);
+  CONVERT_BOOLEAN_ARG_CHECKED(value, 0);
+  isolate->debug()->set_non_breakable_async_events(value);
+  return isolate->heap()->undefined_value();
+}
 
 RUNTIME_FUNCTION(Runtime_DebugPopPromise) {
   DCHECK_EQ(0, args.length());
   SealHandleScope shs(isolate);
   isolate->PopPromise();
   return isolate->heap()->undefined_value();
 }
 
 RUNTIME_FUNCTION(Runtime_DebugAsyncFunctionPromiseCreated) {
   DCHECK_EQ(1, args.length());
@@ skipping 40 matching lines @@
 }
 
 
 RUNTIME_FUNCTION(Runtime_DebugBreakInOptimizedCode) {
   UNIMPLEMENTED();
   return NULL;
 }
 
 }  // namespace internal
 }  // namespace v8