Revert of Remove Scope::scope_uses_this_ flag

src/compiler/ast-graph-builder.cc

Index: src/compiler/ast-graph-builder.cc
diff --git a/src/compiler/ast-graph-builder.cc b/src/compiler/ast-graph-builder.cc
index 26983d6e10fffc9f6c985bd9f100ce11ccfc123d..2ef8d6ffcb6914a7e6f01f811fe0eb1bbcdf0061 100644
--- a/src/compiler/ast-graph-builder.cc
+++ b/src/compiler/ast-graph-builder.cc
@@ -2661,7 +2661,9 @@
   // object). Otherwise there is nothing left to do here.
   if (is_strict(language_mode()) || info()->is_native()) return receiver;
 
-  // There is no need to perform patching if the receiver will never be used.
+  // There is no need to perform patching if the receiver is never used. Note
+  // that scope predicates are purely syntactical, a call to eval might still
+  // inspect the receiver value.
   if (!info()->MayUseThis()) return receiver;
 
   IfBuilder receiver_check(this);