deps: V8: cherry-pick cc5016e1b702

Original commit message:

    [postmortem] add metadata for the new DescriptorArray layout

    R=yangguo@chromium.org

    Ref: nodejs/llnode#255
    Change-Id: Icda271123375db5c381fe1d1bba13dcc26f26d7c
    Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1832311
    Reviewed-by: Yang Guo <yangguo@chromium.org>
    Commit-Queue: Yang Guo <yangguo@chromium.org>
    Cr-Commit-Position: refs/heads/master@{#64169}

Refs: v8/v8@cc5016e

common.gypi

@@ -38,7 +38,7 @@
 
     # Reset this number to 0 on major V8 upgrades.
     # Increment by one for each non-official patch applied to deps/v8.
-    'v8_embedder_string': '-node.21',
+    'v8_embedder_string': '-node.22',
 
     ##### V8 defaults for Node.js #####
 

deps/v8/BUILD.gn

@@ -895,6 +895,8 @@ action("postmortem-metadata") {
     "src/objects/code.h",
     "src/objects/data-handler.h",
     "src/objects/data-handler-inl.h",
+    "src/objects/descriptor-array.h",
+    "src/objects/descriptor-array-inl.h",
     "src/objects/feedback-cell.h",
     "src/objects/feedback-cell-inl.h",
     "src/objects/fixed-array-inl.h",

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

@@ -286,6 +286,7 @@
     'Code, instruction_start, uintptr_t, kHeaderSize',
     'Code, instruction_size, int, kInstructionSizeOffset',
     'String, length, int32_t, kLengthOffset',
+    'DescriptorArray, header_size, uintptr_t, kHeaderSize',
 ];
 
 #
@@ -296,7 +297,8 @@
 expected_classes = [
     'ConsString', 'FixedArray', 'HeapNumber', 'JSArray', 'JSFunction',
     'JSObject', 'JSRegExp', 'JSPrimitiveWrapper', 'Map', 'Oddball', 'Script',
-    'SeqOneByteString', 'SharedFunctionInfo', 'ScopeInfo', 'JSPromise'
+    'SeqOneByteString', 'SharedFunctionInfo', 'ScopeInfo', 'JSPromise',
+    'DescriptorArray'
 ];