Revert "Reland r20974: Unify and simplify the FastCloneShallowArrayStub"

src/compiler.h

Index: src/compiler.h
diff --git a/src/compiler.h b/src/compiler.h
index fd26d24d719cf9815518796918f7b8b6edb799be..24a8a9f5de51c0d3ed79972428bf2e9a330450df 100644
--- a/src/compiler.h
+++ b/src/compiler.h
@@ -143,14 +143,6 @@ class CompilationInfo {
     return RequiresFrame::decode(flags_);
   }
 
-  void MarkMustNotHaveEagerFrame() {
-    flags_ |= MustNotHaveEagerFrame::encode(true);
-  }
-
-  bool GetMustNotHaveEagerFrame() const {
-    return MustNotHaveEagerFrame::decode(flags_);
-  }
-
   void SetParseRestriction(ParseRestriction restriction) {
     flags_ = ParseRestricitonField::update(flags_, restriction);
   }
@@ -376,8 +368,6 @@ class CompilationInfo {
   class ParseRestricitonField: public BitField<ParseRestriction, 12, 1> {};
   // If the function requires a frame (for unspecified reasons)
   class RequiresFrame: public BitField<bool, 13, 1> {};
-  // If the function cannot build a frame (for unspecified reasons)
-  class MustNotHaveEagerFrame: public BitField<bool, 14, 1> {};
 
   unsigned flags_;