Handle "//# sourceURL" comments in the Parser instead of the JS.

src/objects-inl.h

Index: src/objects-inl.h
diff --git a/src/objects-inl.h b/src/objects-inl.h
index 872fa1c0265a46d6e30059205f224234d0a5c3fe..40850c4bd8b6b643d4b80f2f74301c1eb16d1741 100644
--- a/src/objects-inl.h
+++ b/src/objects-inl.h
@@ -5058,6 +5058,8 @@ ACCESSORS_TO_SMI(Script, eval_from_instructions_offset,
                  kEvalFrominstructionsOffsetOffset)
 ACCESSORS_TO_SMI(Script, flags, kFlagsOffset)
 BOOL_ACCESSORS(Script, flags, is_shared_cross_origin, kIsSharedCrossOriginBit)
+ACCESSORS(Script, source_url, Object, kSourceUrlOffset)
+ACCESSORS(Script, source_mapping_url, Object, kSourceMappingUrlOffset)
 
 Script::CompilationType Script::compilation_type() {
   return BooleanBit::get(flags(), kCompilationTypeBit) ?