views::LabelButton should not call virtual methods from its constructor

ui/views/window/dialog_delegate_unittest.cc

Index: ui/views/window/dialog_delegate_unittest.cc
diff --git a/ui/views/window/dialog_delegate_unittest.cc b/ui/views/window/dialog_delegate_unittest.cc
index 42923399b5e68b41223a36ee078d30a916962f59..26e0a97293886f6ca184e1b63f3ca2c7cc1efa37 100644
--- a/ui/views/window/dialog_delegate_unittest.cc
+++ b/ui/views/window/dialog_delegate_unittest.cc
@@ -127,7 +127,8 @@ TEST_F(DialogTest, DefaultButtons) {
   dialog()->PressEnterAndCheckStates(ok_button);
 
   // Focus another button in the dialog, it should become the default.
-  LabelButton* button_1 = new LabelButton(dialog(), base::string16());
+  LabelButton* button_1 = new LabelButton(dialog());
+  button_1->InitAsTextbutton(base::string16());
   client_view->AddChildView(button_1);
   client_view->OnWillChangeFocus(ok_button, button_1);
   EXPECT_TRUE(button_1->is_default());
@@ -141,7 +142,8 @@ TEST_F(DialogTest, DefaultButtons) {
   dialog()->PressEnterAndCheckStates(ok_button);
 
   // Focus yet another button in the dialog, it should become the default.
-  LabelButton* button_2 = new LabelButton(dialog(), base::string16());
+  LabelButton* button_2 = new LabelButton(dialog());
+  button_2->InitAsTextbutton(base::string16());
   client_view->AddChildView(button_2);
   client_view->OnWillChangeFocus(checkbox, button_2);
   EXPECT_FALSE(button_1->is_default());