Experimental viewport meta tag support for desktop, Blink-side.

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 633911c9457d6a4a1a82ce7c0e0c1c3d876e8e17..65e74865116ab599b1d037c8f4ddda72602176e7 100644
--- a/Source/core/dom/Document.cpp
+++ b/Source/core/dom/Document.cpp
@@ -2928,6 +2928,9 @@ bool Document::shouldMergeWithLegacyDescription(ViewportDescription::Type origin
 void Document::setViewportDescription(const ViewportDescription& viewportDescription)
 {
     if (viewportDescription.isLegacyViewportType()) {
+        if (settings() && !settings()->viewportMetaEnabled())
+            return;
+
         m_legacyViewportDescription = viewportDescription;
 
         // When no author style for @viewport is present, and a meta tag for defining