Merge remote branch 'cros/upstream' into tempbranch3

frontend/client/src/autotest/afe/CheckBoxPanelDisplay.java

+package autotest.afe;
+
+import autotest.afe.ICheckBox.CheckBoxImpl;
+
+import com.google.gwt.user.client.ui.Composite;
+import com.google.gwt.user.client.ui.FlexTable;
+
+public class CheckBoxPanelDisplay extends Composite implements CheckBoxPanel.Display {
+    private int numColumns;
+    private FlexTable table = new FlexTable();
+
+    public CheckBoxPanelDisplay(int numColumns) {
+        this.numColumns = numColumns;
+        initWidget(table);
+    }
+
+    public ICheckBox generateCheckBox(int index) {
+        CheckBoxImpl checkbox = new CheckBoxImpl();
+
+        int row = index / numColumns;
+        int col = index % numColumns;
+        table.setWidget(row, col, checkbox);
+
+        return checkbox;
+    }
+}