Add bottom border to StyledLabel.

ui/views/controls/styled_label_unittest.cc

Index: ui/views/controls/styled_label_unittest.cc
diff --git a/ui/views/controls/styled_label_unittest.cc b/ui/views/controls/styled_label_unittest.cc
index 78b7238ea39d1bc8e77b066747cb618f9e1c238f..d3d0f52bb8565a52a478b70742a4c422023e9d6f 100644
--- a/ui/views/controls/styled_label_unittest.cc
+++ b/ui/views/controls/styled_label_unittest.cc
@@ -562,4 +562,14 @@ TEST_F(StyledLabelTest, CacheSize) {
   EXPECT_NE(first_child_after_text_update, first_child_after_layout);
 }
 
+TEST_F(StyledLabelTest, BottomBorder) {
+  const std::string text("One line");
+  InitStyledLabel(text);
+  Label label(ASCIIToUTF16(text));
+  gfx::Size label_preferred_size = label.GetPreferredSize();
+  styled()->SetBorder(CreateEmptyBorder(0, 0, 5 /* bottom */, 0));
+  EXPECT_EQ(label_preferred_size.height() + 5 /* bottom border */,
+            styled()->GetHeightForWidth(1000));
+}
+
 }  // namespace views