[debugger] fix stepping over await calls for ignition generators.

src/runtime/runtime-generator.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/factory.h"
 #include "src/frames-inl.h"
@@ skipping 35 matching lines @@
   DCHECK(args.length() == 1);
   CONVERT_ARG_HANDLE_CHECKED(JSGeneratorObject, generator_object, 0);
 
   JavaScriptFrameIterator stack_iterator(isolate);
   JavaScriptFrame* frame = stack_iterator.frame();
   CHECK(frame->function()->shared()->is_resumable());
   DCHECK_EQ(frame->function(), generator_object->function());
   DCHECK(frame->function()->shared()->is_compiled());
   DCHECK(!frame->function()->IsOptimized());
 
-  if (generator_object->function()->shared()->is_async()) {
-    isolate->debug()->RecordAsyncFunction(generator_object);
-  }
+  isolate->debug()->RecordAsyncFunction(generator_object);
 
   // The caller should have saved the context and continuation already.
   DCHECK_EQ(generator_object->context(), Context::cast(frame->context()));
   DCHECK_LT(0, generator_object->continuation());
 
   // We expect there to be at least two values on the operand stack: the return
   // value of the yield expression, and the arguments to this runtime call.
   // Neither of those should be saved.
   int operands_count = frame->ComputeOperandsCount();
   DCHECK_GE(operands_count, 1 + args.length());
@@ skipping 83 matching lines @@
   if (generator->function()->shared()->HasBytecodeArray()) UNIMPLEMENTED();
 
   Handle<Code> code(generator->function()->code(), isolate);
   int offset = generator->continuation();
   CHECK(0 <= offset && offset < code->instruction_size());
   return Smi::FromInt(code->SourcePosition(offset));
 }
 
 }  // namespace internal
 }  // namespace v8