IDEA-98590 Modal Progress dialog is a bit too wide (wider than with default UI) and doesn't use small font for text2

+review CR-IC @kb

platform/platform-impl/src/com/intellij/openapi/progress/util/ProgressWindow.java

@@ -24,10 +24,7 @@ import com.intellij.openapi.ui.DialogWrapper;
 import com.intellij.openapi.ui.DialogWrapperPeer;
 import com.intellij.openapi.ui.impl.FocusTrackbackProvider;
 import com.intellij.openapi.ui.impl.GlassPaneDialogWrapperPeer;
-import com.intellij.openapi.util.Comparing;
-import com.intellij.openapi.util.Condition;
-import com.intellij.openapi.util.Disposer;
-import com.intellij.openapi.util.EmptyRunnable;
+import com.intellij.openapi.util.*;
 import com.intellij.openapi.wm.IdeFocusManager;
 import com.intellij.openapi.wm.WindowManager;
 import com.intellij.openapi.wm.ex.WindowManagerEx;
@@ -431,10 +428,10 @@ public class ProgressWindow extends BlockingProgressIndicator implements Disposa
     }
 
     private void initDialog(boolean shouldShowBackground, String cancelText) {
-      if (UIUtil.isUnderAquaLookAndFeel()) {
+      if (SystemInfo.isMac) {
         UIUtil.applyStyle(UIUtil.ComponentStyle.SMALL, myText2Label);
       }
-      myInnerPanel.setPreferredSize(new Dimension(UIUtil.isUnderAquaLookAndFeel() ? 350 : 450, -1));
+      myInnerPanel.setPreferredSize(new Dimension(SystemInfo.isMac ? 350 : 450, -1));
 
       myCancelButton.addActionListener(new ActionListener() {
         public void actionPerformed(ActionEvent e) {

platform/util/src/com/intellij/util/ui/UIUtil.java

@@ -93,7 +93,7 @@ public class UIUtil {
 
     JComponent c = (JComponent)comp;
 
-    if (isUnderAquaLookAndFeel()) {
+    if (SystemInfo.isMac) {
       c.putClientProperty("JComponent.sizeVariant",
                           componentStyle == ComponentStyle.REGULAR ? "regular" : componentStyle == ComponentStyle.SMALL ? "small" : "mini");
     }