Report promise reject with no handler (behind a flag).

src/runtime/runtime.h

 // 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.
 
 #ifndef V8_RUNTIME_H_
 #define V8_RUNTIME_H_
 
 #include "src/allocation.h"
 #include "src/zone.h"
 
@@ skipping 61 matching lines @@
   F(UnblockConcurrentRecompilation, 0, 1)                  \
   F(CompileForOnStackReplacement, 1, 1)                    \
   F(SetAllocationTimeout, -1 /* 2 || 3 */, 1)              \
   F(SetNativeFlag, 1, 1)                                   \
   F(SetInlineBuiltinFlag, 1, 1)                            \
   F(StoreArrayLiteralElement, 5, 1)                        \
   F(DebugPrepareStepInIfStepping, 1, 1)                    \
   F(DebugPushPromise, 1, 1)                                \
   F(DebugPopPromise, 0, 1)                                 \
   F(DebugPromiseEvent, 1, 1)                               \
-  F(DebugPromiseRejectEvent, 2, 1)                         \
   F(DebugAsyncTaskEvent, 1, 1)                             \
+  F(PromiseRejectEvent, 2, 1)                              \
   F(FlattenString, 1, 1)                                   \
   F(LoadMutableDouble, 2, 1)                               \
   F(TryMigrateInstance, 1, 1)                              \
   F(NotifyContextDisposed, 0, 1)                           \
                                                            \
   /* Array join support */                                 \
   F(PushIfAbsent, 2, 1)                                    \
   F(ArrayConcat, 1, 1)                                     \
                                                            \
   /* Conversions */                                        \
@@ skipping 804 matching lines @@
 class AllocateDoubleAlignFlag : public BitField<bool, 0, 1> {};
 class AllocateTargetSpace : public BitField<AllocationSpace, 1, 3> {};
 
 class DeclareGlobalsEvalFlag : public BitField<bool, 0, 1> {};
 class DeclareGlobalsNativeFlag : public BitField<bool, 1, 1> {};
 class DeclareGlobalsStrictMode : public BitField<StrictMode, 2, 1> {};
 }
 }  // namespace v8::internal
 
 #endif  // V8_RUNTIME_H_