Undo manual edit to avoid shadowing warning

client/dom/generated/src/wrapping/_IDBKeyRangeWrappingImplementation.dart

 // Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 // WARNING: Do not edit - generated code.
 
 class _IDBKeyRangeWrappingImplementation extends DOMWrapperBase implements IDBKeyRange {
   _IDBKeyRangeWrappingImplementation() : super() {}
 
   static create__IDBKeyRangeWrappingImplementation() native {
@@ skipping 23 matching lines @@
       } else {
         return _bound_3(this, lower, upper, lowerOpen, upperOpen);
       }
     }
     throw "Incorrect number or type of arguments";
   }
   static IDBKeyRange _bound(receiver, lower, upper) native;
   static IDBKeyRange _bound_2(receiver, lower, upper, lowerOpen) native;
   static IDBKeyRange _bound_3(receiver, lower, upper, lowerOpen, upperOpen) native;
 
-  IDBKeyRange lowerBound(IDBKey bound_, [bool open = null]) {
+  IDBKeyRange lowerBound(IDBKey bound, [bool open = null]) {
     if (open === null) {
-      return _lowerBound(this, bound_);
+      return _lowerBound(this, bound);
     } else {
-      return _lowerBound_2(this, bound_, open);
+      return _lowerBound_2(this, bound, open);
     }
   }
   static IDBKeyRange _lowerBound(receiver, bound) native;
   static IDBKeyRange _lowerBound_2(receiver, bound, open) native;
 
   IDBKeyRange only(IDBKey value) {
     return _only(this, value);
   }
   static IDBKeyRange _only(receiver, value) native;
 
-  IDBKeyRange upperBound(IDBKey bound_, [bool open = null]) {
+  IDBKeyRange upperBound(IDBKey bound, [bool open = null]) {
     if (open === null) {
-      return _upperBound(this, bound_);
+      return _upperBound(this, bound);
     } else {
-      return _upperBound_2(this, bound_, open);
+      return _upperBound_2(this, bound, open);
     }
   }
   static IDBKeyRange _upperBound(receiver, bound) native;
   static IDBKeyRange _upperBound_2(receiver, bound, open) native;
 
   String get typeName() { return "IDBKeyRange"; }
 }