Revert of Remove ExternalArray, derived types, and element kinds

src/compiler/access-builder.h

Index: src/compiler/access-builder.h
diff --git a/src/compiler/access-builder.h b/src/compiler/access-builder.h
index 95be3e0dd84b7ad9c9ac97b566f402359b1899be..240ffdcb5dac59d11998b0bf7cf0c0b386f61197 100644
--- a/src/compiler/access-builder.h
+++ b/src/compiler/access-builder.h
@@ -42,6 +42,9 @@
 
   // Provides access to FixedArray::length() field.
   static FieldAccess ForFixedArrayLength();
+
+  // Provides access to ExternalArray::external_pointer() field.
+  static FieldAccess ForExternalArrayPointer();
 
   // Provides access to DescriptorArray::enum_cache() field.
   static FieldAccess ForDescriptorArrayEnumCache();