[promisehook] Implement PromiseHook

src/isolate.h

Index: src/isolate.h
diff --git a/src/isolate.h b/src/isolate.h
index e5f1766a831f47a52197e459b4858518dc6089ca..d31db62335efcccf66951d00be787b9a7bc6adc3 100644
--- a/src/isolate.h
+++ b/src/isolate.h
@@ -415,6 +415,7 @@ typedef List<HeapObject*> DebugObjectCache;
   V(bool, fp_stubs_generated, false)                                          \
   V(uint32_t, per_isolate_assert_data, 0xFFFFFFFFu)                           \
   V(PromiseRejectCallback, promise_reject_callback, nullptr)                  \
+  V(PromiseHook, promise_hook, nullptr)                                       \
   V(const v8::StartupData*, snapshot_blob, nullptr)                           \
   V(int, code_and_metadata_size, 0)                                           \
   V(int, bytecode_and_metadata_size, 0)                                       \
@@ -1125,12 +1126,13 @@ class Isolate {
   int GetNextUniqueSharedFunctionInfoId() { return next_unique_sfi_id_++; }
 #endif
 
-  Address is_promisehook_enabled_address() {
-    return reinterpret_cast<Address>(&is_promisehook_enabled_);
+  Address is_promise_hook_enabled_address() {
+    return reinterpret_cast<Address>(&is_promise_hook_enabled_);
   }
-  bool IsPromiseHookEnabled() { return is_promisehook_enabled_; }
-  void EnablePromiseHook();
-  void DisablePromiseHook();
+  bool IsPromiseHookEnabled() { return is_promise_hook_enabled_; }
+  void SetPromiseHook(PromiseHook hook);
+  void RunPromiseHook(PromiseHookType type, Handle<JSObject> promise,
+                      Handle<Object> parent);
 
   // Support for dynamically disabling tail call elimination.
   Address is_tail_call_elimination_enabled_address() {
@@ -1373,7 +1375,7 @@ class Isolate {
   bool initialized_from_snapshot_;
 
   // True if PromiseHook feature is enabled.
-  bool is_promisehook_enabled_;
+  bool is_promise_hook_enabled_;
 
   // True if ES2015 tail call elimination feature is enabled.
   bool is_tail_call_elimination_enabled_;