Change DCHECK_IS_ON() to DCHECK_IS_ON

cc/layers/picture_layer_impl.cc

Index: cc/layers/picture_layer_impl.cc
diff --git a/cc/layers/picture_layer_impl.cc b/cc/layers/picture_layer_impl.cc
index a2b5ca3952a6e79b641109a46fb20edacc5fd4c7..628f419837db141cc3e9087582aa1a1e10b0e659 100644
--- a/cc/layers/picture_layer_impl.cc
+++ b/cc/layers/picture_layer_impl.cc
@@ -1192,9 +1192,7 @@ bool PictureLayerImpl::CanHaveTilingWithScale(float contents_scale) const {
 }
 
 void PictureLayerImpl::SanityCheckTilingState() const {
-  if (!DCHECK_IS_ON())
-    return;
-
+#if DCHECK_IS_ON
   if (!CanHaveTilings()) {
     DCHECK_EQ(0u, tilings_->num_tilings());
     return;
@@ -1205,6 +1203,7 @@ void PictureLayerImpl::SanityCheckTilingState() const {
   // MarkVisibleResourcesAsRequired depends on having exactly 1 high res
   // tiling to mark its tiles as being required for activation.
   DCHECK_EQ(1, tilings_->NumHighResTilings());
+#endif
 }
 
 void PictureLayerImpl::GetDebugBorderProperties(