Allow assertions to be enabled in Blink Release builds.

Source/core/dom/Document.cpp

Index: Source/core/dom/Document.cpp
diff --git a/Source/core/dom/Document.cpp b/Source/core/dom/Document.cpp
index 6d57dec3e71fe4aaf548661c663bab818b53eaee..4eca20f9319b8eab5d9ee004987e69c7033caa6f 100644
--- a/Source/core/dom/Document.cpp
+++ b/Source/core/dom/Document.cpp
@@ -497,9 +497,6 @@ Document::Document(const DocumentInit& initializer, DocumentClassFlags documentC
     , m_taskRunner(MainThreadTaskRunner::create(this))
     , m_registrationContext(initializer.registrationContext(this))
     , m_elementDataCacheClearTimer(this, &Document::elementDataCacheClearTimerFired)
-#ifndef NDEBUG
-    , m_didDispatchViewportPropertiesChanged(false)
-#endif
     , m_timeline(AnimationTimeline::create(this))
     , m_templateDocumentHost(nullptr)
     , m_didAssociateFormControlsTimer(this, &Document::didAssociateFormControlsTimerFired)
@@ -3155,9 +3152,6 @@ void Document::setViewportDescription(const ViewportDescription& viewportDescrip
 void Document::updateViewportDescription()
 {
     if (frame() && frame()->isMainFrame()) {
-#ifndef NDEBUG
-        m_didDispatchViewportPropertiesChanged = true;
-#endif
         frameHost()->chrome().dispatchViewportPropertiesDidChange(m_viewportDescription);
     }
 }