Allow assertions to be enabled in Blink Release builds.

Source/core/rendering/RenderView.cpp

Index: Source/core/rendering/RenderView.cpp
diff --git a/Source/core/rendering/RenderView.cpp b/Source/core/rendering/RenderView.cpp
index 0c32889e8dcef547e8b2ea050c69cbb050c09a6d..8bb87f82ba076c9462fefd49c2bfed9cf3d04c2e 100644
--- a/Source/core/rendering/RenderView.cpp
+++ b/Source/core/rendering/RenderView.cpp
@@ -172,12 +172,12 @@ void RenderView::layoutContent()
     if (RuntimeEnabledFeatures::dialogElementEnabled())
         positionDialogs();
 
-#ifndef NDEBUG
+#if ENABLE(ASSERT)
     checkLayoutState();
 #endif
 }
 
-#ifndef NDEBUG
+#if ENABLE(ASSERT)
 void RenderView::checkLayoutState()
 {
     ASSERT(!m_layoutState->next());
@@ -254,7 +254,7 @@ void RenderView::layout()
 
     layoutContent();
 
-#ifndef NDEBUG
+#if ENABLE(ASSERT)
     checkLayoutState();
 #endif
     clearNeedsLayout();