Revert of Reapply "Resolve references to "this" the same way as normal variables""

src/preparser.h

Index: src/preparser.h
diff --git a/src/preparser.h b/src/preparser.h
index c5058649c10aa1c65a5478a7357306b5cfd37100..aeef700bfe7593a8369b4c4b5f0350fa8dc5b707 100644
--- a/src/preparser.h
+++ b/src/preparser.h
@@ -2264,6 +2264,7 @@
           break;
         }
       }
+      scope_->RecordThisUsage();
       result = this->ThisExpression(scope_, factory(), beg_pos);
       break;
     }
@@ -3335,6 +3336,7 @@
   Consume(Token::THIS);
   int pos = position();
   function_state_->set_this_location(scanner()->location());
+  scope_->RecordThisUsage();
   ExpressionT this_expr = this->ThisExpression(scope_, factory(), pos);
 
   ExpressionT left = this->EmptyExpression();