Revert of Refactor SharedFunctionInfo::IsBuiltin.

src/objects.h

Index: src/objects.h
diff --git a/src/objects.h b/src/objects.h
index d9eead278be012925891625a2c9868ddab7f507a..1cc325bb6501743b6e6be0e2602281ccb1b52c1e 100644
--- a/src/objects.h
+++ b/src/objects.h
@@ -7102,6 +7102,11 @@
   inline CompilationState compilation_state();
   inline void set_compilation_state(CompilationState state);
 
+  // [hide_source]: determines whether the script source can be exposed as
+  // function source. Encoded in the 'flags' field.
+  inline bool hide_source();
+  inline void set_hide_source(bool value);
+
   // [origin_options]: optional attributes set by the embedder via ScriptOrigin,
   // and used by the embedder to make decisions about the script. V8 just passes
   // this through. Encoded in the 'flags' field.
@@ -7202,7 +7207,8 @@
   // Bit positions in the flags field.
   static const int kCompilationTypeBit = 0;
   static const int kCompilationStateBit = 1;
-  static const int kOriginOptionsShift = 2;
+  static const int kHideSourceBit = 2;
+  static const int kOriginOptionsShift = 3;
   static const int kOriginOptionsSize = 3;
   static const int kOriginOptionsMask = ((1 << kOriginOptionsSize) - 1)
                                         << kOriginOptionsShift;
@@ -7718,8 +7724,8 @@
   // Tells whether this function should be subject to debugging.
   inline bool IsSubjectToDebugging();
 
-  // Whether this function is defined in user-provided JavaScript code.
-  inline bool IsUserJavaScript();
+  // Whether this function is defined in native code or extensions.
+  inline bool IsBuiltin();
 
   // Check whether or not this function is inlineable.
   bool IsInlineable();