deps: add postmortem metadata for V8 TurboFan

Refs: https://github.com/nodejs/llnode/pull/130
Refs: https://chromium-review.googlesource.com/c/v8/v8/+/650746
PR-URL: https://github.com/nodejs/node/pull/14730
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Ali Ijaz Sheikh <ofrobots@google.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>

deps/v8/tools/gen-postmortem-metadata.py

@@ -248,6 +248,7 @@ extras_accessors = [
     'JSObject, elements, Object, kElementsOffset',
     'JSObject, internal_fields, uintptr_t, kHeaderSize',
     'FixedArray, data, uintptr_t, kHeaderSize',
+    'FixedTypedArrayBase, external_pointer, Object, kExternalPointerOffset',
     'JSArrayBuffer, backing_store, Object, kBackingStoreOffset',
     'JSArrayBufferView, byte_offset, Object, kByteOffsetOffset',
     'JSTypedArray, length, Object, kLengthOffset',
@@ -267,6 +268,12 @@ extras_accessors = [
     'SeqTwoByteString, chars, char, kHeaderSize',
     'SharedFunctionInfo, code, Code, kCodeOffset',
     'SharedFunctionInfo, scope_info, ScopeInfo, kScopeInfoOffset',
+    'SharedFunctionInfo, function_token_position, int, kFunctionTokenPositionOffset',
+    'SharedFunctionInfo, start_position_and_type, int, kStartPositionAndTypeOffset',
+    'SharedFunctionInfo, end_position, int, kEndPositionOffset',
+    'SharedFunctionInfo, internal_formal_parameter_count, int, kFormalParameterCountOffset',
+    'SharedFunctionInfo, compiler_hints, int, kCompilerHintsOffset',
+    'SharedFunctionInfo, length, int, kLengthOffset',
     'SlicedString, parent, String, kParentOffset',
     'Code, instruction_start, uintptr_t, kHeaderSize',
     'Code, instruction_size, int, kInstructionSizeOffset',