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

Source/bindings/v8/custom/V8CSSStyleDeclarationCustom.cpp

Index: Source/bindings/v8/custom/V8CSSStyleDeclarationCustom.cpp
diff --git a/Source/bindings/v8/custom/V8CSSStyleDeclarationCustom.cpp b/Source/bindings/v8/custom/V8CSSStyleDeclarationCustom.cpp
index 70649751ef792a9ab85c0bf235e44dfea68328c4..96196273617320ad4307c36d883ebf5b41ffb0b9 100644
--- a/Source/bindings/v8/custom/V8CSSStyleDeclarationCustom.cpp
+++ b/Source/bindings/v8/custom/V8CSSStyleDeclarationCustom.cpp
@@ -117,18 +117,19 @@ static CSSPropertyInfo* cssPropertyInfo(v8::Handle<v8::String> v8PropertyName)
 
         unsigned i = 0;
 
-        if (hasCSSPropertyNamePrefix(propertyName, "css"))
+        if (hasCSSPropertyNamePrefix(propertyName, "css")) {
             i += 3;
-        else if (hasCSSPropertyNamePrefix(propertyName, "pixel")) {
+        } else if (hasCSSPropertyNamePrefix(propertyName, "pixel")) {
             i += 5;
             hadPixelOrPosPrefix = true;
         } else if (hasCSSPropertyNamePrefix(propertyName, "pos")) {
             i += 3;
             hadPixelOrPosPrefix = true;
-        } else if (hasCSSPropertyNamePrefix(propertyName, "webkit"))
+        } else if (hasCSSPropertyNamePrefix(propertyName, "webkit")) {
             builder.append('-');
-        else if (isASCIIUpper(propertyName[0]))
+        } else if (hasCSSPropertyNamePrefix(propertyName, "internal") || isASCIIUpper(propertyName[0])) {
             return 0;
+        }
 
         builder.append(toASCIILower(propertyName[i++]));
 
@@ -163,8 +164,11 @@ void V8CSSStyleDeclaration::namedPropertyEnumeratorCustom(const v8::PropertyCall
     if (propertyNames.isEmpty()) {
         for (int id = firstCSSProperty; id <= lastCSSProperty; ++id) {
             CSSPropertyID propertyId = static_cast<CSSPropertyID>(id);
-            if (RuntimeCSSEnabled::isCSSPropertyEnabled(propertyId))
-                propertyNames.append(getJSPropertyName(propertyId));
+            if (RuntimeCSSEnabled::isCSSPropertyEnabled(propertyId)) {
+                String propertyName = getJSPropertyName(propertyId);
+                if (!hasCSSPropertyNamePrefix(propertyName, "internal"))
+                    propertyNames.append(propertyName);
+            }
         }
         sort(propertyNames.begin(), propertyNames.end(), codePointCompareLessThan);
         propertyNamesLength = propertyNames.size();