[V8] Added Script::is_opaque flag for embedders

src/objects.h

Index: src/objects.h
diff --git a/src/objects.h b/src/objects.h
index 7edcda864863df8f258b1f23f45c48a49cf3fe86..7d79ec036a43c004ef2d4ac25ad308569f119613 100644
--- a/src/objects.h
+++ b/src/objects.h
@@ -6750,6 +6750,11 @@ class Script: public Struct {
   // the 'flags' field.
   DECL_BOOLEAN_ACCESSORS(is_shared_cross_origin)
 
+  // [is_opaque]: An opaque boolean set by the embedder via ScriptOrigin, and
+  // used by the embedder to make decisions about the opaqueness of script. V8
+  // just passes this through. Encoded in the 'flags' field.
+  DECL_BOOLEAN_ACCESSORS(is_opaque)
+
   DECLARE_CAST(Script)
 
   // If script source is an external string, check that the underlying
@@ -6802,6 +6807,7 @@ class Script: public Struct {
   static const int kCompilationStateBit = 1;
   static const int kIsEmbedderDebugScriptBit = 2;
   static const int kIsSharedCrossOriginBit = 3;
+  static const int kIsOpaqueBit = 4;
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(Script);
 };
@@ -10548,7 +10554,7 @@ class AccessorInfo: public Struct {
   // Bit positions in flag.
   static const int kAllCanReadBit = 0;
   static const int kAllCanWriteBit = 1;
-  class AttributesField: public BitField<PropertyAttributes, 2, 3> {};
+  class AttributesField : public BitField<PropertyAttributes, 2, 3> {};
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(AccessorInfo);
 };