Fix incorrect evaluation of resolution media queries

Source/core/testing/Internals.cpp

 /*
  * Copyright (C) 2012 Google Inc. All rights reserved.
  * Copyright (C) 2013 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
@@ skipping 1749 matching lines @@
 String Internals::pageSizeAndMarginsInPixels(int pageNumber, int width, int height, int marginTop, int marginRight, int marginBottom, int marginLeft, ExceptionCode& ec) const
 {
     if (!frame()) {
         ec = INVALID_ACCESS_ERR;
         return String();
     }
 
     return PrintContext::pageSizeAndMarginsInPixels(frame(), pageNumber, width, height, marginTop, marginRight, marginBottom, marginLeft);
 }
 
+void Internals::setDeviceScaleFactor(float scaleFactor, ExceptionCode& ec)
+{
+    Document* document = contextDocument();
+    if (!document || !document->page()) {
+        ec = INVALID_ACCESS_ERR;
+        return;
+    }
+    Page* page = document->page();
+    page->setDeviceScaleFactor(scaleFactor);

[johnme, 2013/04/29 13:25:45]

Shouldn't you restore the original device scale factor in
Internals::resetToConsistentState?

+}
+
 void Internals::setPageScaleFactor(float scaleFactor, int x, int y, ExceptionCode& ec)
 {
     Document* document = contextDocument();
     if (!document || !document->page()) {
         ec = INVALID_ACCESS_ERR;
         return;
     }
     Page* page = document->page();
     page->setPageScaleFactor(scaleFactor, IntPoint(x, y));
 }
@@ skipping 215 matching lines @@
 
     RenderObject* renderer = select->renderer();
     if (!renderer->isMenuList())
         return false;
 
     RenderMenuList* menuList = toRenderMenuList(renderer);
     return menuList->popupIsVisible();
 }
 
 }