Translate viewport related meta tags into @viewport descriptors as suggested by the CSS Device Adap…

Source/core/testing/Internals.cpp

Index: Source/core/testing/Internals.cpp
diff --git a/Source/core/testing/Internals.cpp b/Source/core/testing/Internals.cpp
index aab304b8c9e174e2315fdd3ea28537337e70dc32..bd5c867700228c05a15d97926c6d40cb68a2084d 100644
--- a/Source/core/testing/Internals.cpp
+++ b/Source/core/testing/Internals.cpp
@@ -911,7 +911,7 @@ void Internals::setPagination(Document* document, const String& mode, int gap, i
     page->setPagination(pagination);
 }
 
-String Internals::configurationForViewport(Document* document, float, int deviceWidth, int deviceHeight, int availableWidth, int availableHeight, ExceptionCode& ec)
+String Internals::configurationForViewport(Document* document, float, int, int, int availableWidth, int availableHeight, ExceptionCode& ec)
 {
     if (!document || !document->page()) {
         ec = InvalidAccessError;
@@ -925,7 +925,7 @@ String Internals::configurationForViewport(Document* document, float, int device
     document->styleResolver()->viewportStyleResolver()->resolve();
 
     ViewportArguments arguments = page->viewportArguments();
-    PageScaleConstraints constraints = arguments.resolve(initialViewportSize, FloatSize(deviceWidth, deviceHeight), 980 /* defaultLayoutWidthForNonMobilePages */);
+    PageScaleConstraints constraints = arguments.resolve(initialViewportSize);
 
     constraints.fitToContentsWidth(constraints.layoutSize.width(), availableWidth);