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 ac725314e92702dd4df68f846c41768051a8ec88..90ec83e5668d2151f3150d05d40b64c6710e1317 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)
@@ -3157,9 +3154,6 @@ void Document::setViewportDescription(const ViewportDescription& viewportDescrip
 void Document::updateViewportDescription()
 {
     if (frame() && frame()->isMainFrame()) {
-#ifndef NDEBUG
-        m_didDispatchViewportPropertiesChanged = true;
-#endif
         frameHost()->chrome().dispatchViewportPropertiesDidChange(m_viewportDescription);
     }
 }