[promises] Add %WaitForPromise runtime call to allow tests to reliably wait for promises to be fini…

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_RUNTIME_H_
 #define V8_RUNTIME_RUNTIME_H_
 
 #include <memory>
 
 #include "src/allocation.h"
@@ skipping 438 matching lines @@
   F(EnqueuePromiseResolveThenableJob, 1, 1) \
   F(PromiseHookInit, 2, 1)                  \
   F(PromiseHookResolve, 1, 1)               \
   F(PromiseHookBefore, 1, 1)                \
   F(PromiseHookAfter, 1, 1)                 \
   F(PromiseMarkAsHandled, 1, 1)             \
   F(PromiseRejectEventFromStack, 2, 1)      \
   F(PromiseRevokeReject, 1, 1)              \
   F(PromiseResult, 1, 1)                    \
   F(PromiseStatus, 1, 1)                    \
-  F(ReportPromiseReject, 2, 1)
+  F(ReportPromiseReject, 2, 1)              \
+  F(IncrementWaitCount, 0, 1)               \
+  F(DecrementWaitCount, 0, 1)
 
 #define FOR_EACH_INTRINSIC_PROXY(F)     \
   F(IsJSProxy, 1, 1)                    \
   F(JSProxyCall, -1 /* >= 2 */, 1)      \
   F(JSProxyConstruct, -1 /* >= 3 */, 1) \
   F(JSProxyGetTarget, 1, 1)             \
   F(JSProxyGetHandler, 1, 1)            \
   F(JSProxyRevoke, 1, 1)
 
 #define FOR_EACH_INTRINSIC_REGEXP(F)                \
@@ skipping 381 matching lines @@
   kMaybeDeopted = 1 << 3,
   kOptimized = 1 << 4,
   kTurboFanned = 1 << 5,
   kInterpreted = 1 << 6,
 };
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_RUNTIME_RUNTIME_H_