Change DCHECK_IS_ON() to DCHECK_IS_ON

cc/trees/tree_synchronizer.cc

 // Copyright 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "cc/trees/tree_synchronizer.h"
 
 #include <set>
 
 #include "base/containers/hash_tables.h"
 #include "base/containers/scoped_ptr_hash_map.h"
@@ skipping 273 matching lines @@
     CheckScrollAndClipPointersRecursive(layer->child_at(i),
                                         layer_impl->child_at(i));
   }
 }
 
 void TreeSynchronizer::PushProperties(Layer* layer,
                                       LayerImpl* layer_impl) {
   size_t num_dependents_need_push_properties = 0;
   PushPropertiesInternal(
       layer, layer_impl, &num_dependents_need_push_properties);
-  if (DCHECK_IS_ON()) {
-    CheckScrollAndClipPointersRecursive(layer, layer_impl);
-  }
+#if DCHECK_IS_ON
+  CheckScrollAndClipPointersRecursive(layer, layer_impl);
+#endif
 }
 
 void TreeSynchronizer::PushProperties(LayerImpl* layer, LayerImpl* layer_impl) {
   size_t num_dependents_need_push_properties = 0;
   PushPropertiesInternal(
       layer, layer_impl, &num_dependents_need_push_properties);
 }
 
 }  // namespace cc