Fix incorrect evaluation of resolution media queries

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 d71435f31c77d55387f526855ff708a35f49700a..a07b3fdd3436ce2204243402460572a545844959 100644
--- a/Source/core/testing/Internals.cpp
+++ b/Source/core/testing/Internals.cpp
@@ -1697,6 +1697,17 @@ String Internals::pageSizeAndMarginsInPixels(int pageNumber, int width, int heig
     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);
+}
+
 void Internals::setPageScaleFactor(float scaleFactor, int x, int y, ExceptionCode& ec)
 {
     Document* document = contextDocument();