Read the default min-width value from the UA style sheets

Source/web/tests/ViewportTest.cpp

 /*
  * Copyright (C) 2013 Google 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 19 matching lines @@
 
 #include "config.h"
 
 #include "FrameTestHelpers.h"
 #include "URLTestHelpers.h"
 #include "WebConsoleMessage.h"
 #include "WebFrame.h"
 #include "WebScriptSource.h"
 #include "WebSettings.h"
 #include "WebViewClient.h"
-#include "core/dom/ViewportDescription.h"
 #include "core/frame/FrameView.h"
 #include "core/frame/LocalFrame.h"
+#include "core/page/InjectedStyleSheets.h"
 #include "core/page/Page.h"
 #include "core/page/PageScaleConstraints.h"
 #include "core/frame/Settings.h"
+#include "platform/Length.h"
 #include "platform/geometry/IntPoint.h"
 #include "platform/geometry/IntRect.h"
 #include "platform/geometry/IntSize.h"
 #include "platform/scroll/ScrollbarTheme.h"
 #include "public/platform/Platform.h"
 #include "public/platform/WebUnitTestSupport.h"
 #include <gmock/gmock.h>
 #include <gtest/gtest.h>
 
 #include <vector>
@@ skipping 64 matching lines @@
 {
     settings->setViewportEnabled(true);
     settings->setViewportMetaEnabled(true);
     settings->setMainFrameResizesAreOrientationChanges(true);
 }
 
 static PageScaleConstraints runViewportTest(Page* page, int initialWidth, int initialHeight)
 {
     IntSize initialViewportSize(initialWidth, initialHeight);
     page->mainFrame()->view()->setFrameRect(IntRect(IntPoint::zero(), initialViewportSize));
-
     ViewportDescription description = page->viewportDescription();
-    PageScaleConstraints constraints = description.resolve(initialViewportSize);
+    PageScaleConstraints constraints = description.resolve(initialViewportSize, WebCore::Length(980, WebCore::Fixed));
 
     constraints.fitToContentsWidth(constraints.layoutSize.width(), initialWidth);
     return constraints;
 }
 
 TEST_F(ViewportTest, viewport1)
 {
     UseMockScrollbarSettings mockScrollbarSettings;
     registerMockedHttpURLLoad("viewport/viewport-1.html");
 
@@ skipping 2976 matching lines @@
     FrameTestHelpers::WebViewHelper webViewHelper;
     webViewHelper.initializeAndLoad(m_baseURL + "viewport/viewport-warnings-7.html", true, 0, &webViewClient, setViewportSettings);
 
     Page* page = webViewHelper.webViewImpl()->page();
     runViewportTest(page, 320, 352);
 
     EXPECT_EQ(0U, webViewClient.messages.size());
 }
 
 } // namespace