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 eddd078839e5698fb2ef682be4d455bfd8d242d1..047d5eab58648801c6a83a49db13bb31c9030fc3 100644
--- a/Source/core/dom/Document.cpp
+++ b/Source/core/dom/Document.cpp
@@ -2946,6 +2946,9 @@ 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