Revert of Disallow passing a SharedArrayBuffer in the transfer list.

include/v8.h

Index: include/v8.h
diff --git a/include/v8.h b/include/v8.h
index 1ab2af39c1e3bd4cbcd2a2a00a549a8d86a0849c..3a8b071099b84aa883f5c87a91034a67d701b82e 100644
--- a/include/v8.h
+++ b/include/v8.h
@@ -1710,19 +1710,6 @@
     virtual Maybe<bool> WriteHostObject(Isolate* isolate, Local<Object> object);
 
     /*
-     * Called when the ValueSerializer is going to serialize a
-     * SharedArrayBuffer object. The embedder must return an ID for the
-     * object, using the same ID if this SharedArrayBuffer has already been
-     * serialized in this buffer. When deserializing, this ID will be passed to
-     * ValueDeserializer::TransferSharedArrayBuffer as |transfer_id|.
-     *
-     * If the object cannot be serialized, an
-     * exception should be thrown and Nothing<uint32_t>() returned.
-     */
-    virtual Maybe<uint32_t> GetSharedArrayBufferId(
-        Isolate* isolate, Local<SharedArrayBuffer> shared_array_buffer);
-
-    /*
      * Allocates memory for the buffer of at least the size provided. The actual
      * size (which may be greater or equal) is written to |actual_size|. If no
      * buffer has been allocated yet, nullptr will be provided.
@@ -1776,10 +1763,8 @@
   /*
    * Similar to TransferArrayBuffer, but for SharedArrayBuffer.
    */
-  V8_DEPRECATE_SOON("Use Delegate::GetSharedArrayBufferId",
-                    void TransferSharedArrayBuffer(
-                        uint32_t transfer_id,
-                        Local<SharedArrayBuffer> shared_array_buffer));
+  void TransferSharedArrayBuffer(uint32_t transfer_id,
+                                 Local<SharedArrayBuffer> shared_array_buffer);
 
   /*
    * Write raw data in various common formats to the buffer.
@@ -1846,10 +1831,9 @@
 
   /*
    * Similar to TransferArrayBuffer, but for SharedArrayBuffer.
-   * The id is not necessarily in the same namespace as unshared ArrayBuffer
-   * objects.
-   */
-  void TransferSharedArrayBuffer(uint32_t id,
+   * transfer_id exists in the same namespace as unshared ArrayBuffer objects.
+   */
+  void TransferSharedArrayBuffer(uint32_t transfer_id,
                                  Local<SharedArrayBuffer> shared_array_buffer);
 
   /*