Round when calculating minimum height of WebViews

Source/web/tests/WebViewTest.cpp

Index: Source/web/tests/WebViewTest.cpp
diff --git a/Source/web/tests/WebViewTest.cpp b/Source/web/tests/WebViewTest.cpp
index 6b78e957be83451e0436d406b9e88ac0067071eb..a787d88956e1fb89c3cf2659adfaee245159fa76 100644
--- a/Source/web/tests/WebViewTest.cpp
+++ b/Source/web/tests/WebViewTest.cpp
@@ -2349,6 +2349,18 @@ TEST_F(WebViewTest, PreferredSize)
     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);