Round when calculating minimum height of WebViews

Source/web/tests/WebViewTest.cpp

 /*
  * Copyright (C) 2011, 2012 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 2331 matching lines @@
 
     WebSize size = webView->contentsPreferredMinimumSize();
     EXPECT_EQ(100, size.width);
     EXPECT_EQ(100, size.height);
 
     webView->setZoomLevel(WebView::zoomFactorToZoomLevel(2.0));
     size = webView->contentsPreferredMinimumSize();
     EXPECT_EQ(200, size.width);
     EXPECT_EQ(200, size.height);
 
+    // Verify that both width and height are rounded (in this case up)
+    webView->setZoomLevel(WebView::zoomFactorToZoomLevel(0.9995));
+    size = webView->contentsPreferredMinimumSize();
+    EXPECT_EQ(100, size.width);
+    EXPECT_EQ(100, size.height);
+
+    // Verify that both width and height are rounded (in this case down)
+    webView->setZoomLevel(WebView::zoomFactorToZoomLevel(1.0005));
+    size = webView->contentsPreferredMinimumSize();
+    EXPECT_EQ(100, size.width);
+    EXPECT_EQ(100, size.height);
+
     url = m_baseURL + "specify_size.html?1.5px:1.5px";
     URLTestHelpers::registerMockedURLLoad(toKURL(url), "specify_size.html");
     webView = m_webViewHelper.initializeAndLoad(url, true);
 
     webView->setZoomLevel(WebView::zoomFactorToZoomLevel(1));
     size = webView->contentsPreferredMinimumSize();
     EXPECT_EQ(2, size.width);
     EXPECT_EQ(2, size.height);
 }
 
@@ skipping 159 matching lines @@
     // Test without any preventDefault.
     client.reset();
     frame->executeScript(WebScriptSource("setTest('none');"));
     EXPECT_TRUE(tapElementById(webView, WebInputEvent::GestureTap, WebString::fromUTF8("target")));
     EXPECT_TRUE(client.getWasCalled());
 
     m_webViewHelper.reset(); // Remove dependency on locally scoped client.
 }
 
 } // namespace