[promises] Clean up promise utils and remove dead code

src/factory.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/factory.h"
 
 #include "src/accessors.h"
 #include "src/allocation-site-scopes.h"
 #include "src/ast/ast.h"
 #include "src/base/bits.h"
@@ skipping 980 matching lines @@
   Handle<FixedArray> array = NewFixedArray(scope_info->ContextLength());
   array->set_map_no_write_barrier(*block_context_map());
   Handle<Context> context = Handle<Context>::cast(array);
   context->set_closure(*function);
   context->set_previous(*previous);
   context->set_extension(*scope_info);
   context->set_native_context(previous->native_context());
   return context;
 }
 
-Handle<Context> Factory::NewPromiseResolvingFunctionContext(int length) {
-  DCHECK_GE(length, Context::MIN_CONTEXT_SLOTS);
-  Handle<FixedArray> array = NewFixedArray(length);
-  array->set_map_no_write_barrier(*function_context_map());
-  Handle<Context> context = Handle<Context>::cast(array);
-  context->set_extension(*the_hole_value());
-  return context;
-}
-
 Handle<Struct> Factory::NewStruct(InstanceType type) {
   CALL_HEAP_FUNCTION(
       isolate(),
       isolate()->heap()->AllocateStruct(type),
       Struct);
 }
 
-Handle<PromiseReactionJobInfo> Factory::NewPromiseReactionJobInfo(
-    Handle<Object> value, Handle<Object> tasks, Handle<Object> deferred_promise,
-    Handle<Object> deferred_on_resolve, Handle<Object> deferred_on_reject,
-    Handle<Context> context) {
-  Handle<PromiseReactionJobInfo> result = Handle<PromiseReactionJobInfo>::cast(
-      NewStruct(PROMISE_REACTION_JOB_INFO_TYPE));
-  result->set_value(*value);
-  result->set_tasks(*tasks);
-  result->set_deferred_promise(*deferred_promise);
-  result->set_deferred_on_resolve(*deferred_on_resolve);
-  result->set_deferred_on_reject(*deferred_on_reject);
-  result->set_debug_id(kDebugPromiseFirstID);
-  result->set_context(*context);
-  return result;
-}
-
 Handle<AliasedArgumentsEntry> Factory::NewAliasedArgumentsEntry(
     int aliased_context_slot) {
   Handle<AliasedArgumentsEntry> entry = Handle<AliasedArgumentsEntry>::cast(
       NewStruct(ALIASED_ARGUMENTS_ENTRY_TYPE));
   entry->set_aliased_context_slot(aliased_context_slot);
   return entry;
 }
 
 
 Handle<AccessorInfo> Factory::NewAccessorInfo() {
@@ skipping 1760 matching lines @@
     Handle<AccessorInfo> prototype =
         Accessors::FunctionPrototypeInfo(isolate(), rw_attribs);
     Descriptor d = Descriptor::AccessorConstant(
         Handle<Name>(Name::cast(prototype->name())), prototype, rw_attribs);
     map->AppendDescriptor(&d);
   }
 }
 
 }  // namespace internal
 }  // namespace v8