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

Source/core/css/ViewportStyle.h

Index: Source/core/css/ViewportStyle.h
diff --git a/Source/modules/device_orientation/DeviceRotationRate.idl b/Source/core/css/ViewportStyle.h
similarity index 85%
copy from Source/modules/device_orientation/DeviceRotationRate.idl
copy to Source/core/css/ViewportStyle.h
index 2d7600aa86f7ddd3cb541e25b90152c1cdd801ff..903ad0fe81c180def8cb398c337f5fc8e1224d4e 100644
--- a/Source/modules/device_orientation/DeviceRotationRate.idl
+++ b/Source/core/css/ViewportStyle.h
@@ -23,10 +23,18 @@
  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-[
-    NoInterfaceObject
-] interface DeviceRotationRate {
-    readonly attribute double? alpha;
-    readonly attribute double? beta;
-    readonly attribute double? gamma;
+#ifndef ViewportStyle_h
+#define ViewportStyle_h
+
+#include "wtf/text/WTFString.h"
+
+namespace WebCore {
+
+class ViewportStyle {
+public:
+    static String viewportStyleSheet();
 };
+
+} // namespace WebCore
+
+#endif // ViewportStyle_h