[rAC, OSX] Namespaced constants.

chrome/browser/ui/cocoa/autofill/down_arrow_popup_menu_cell_unittest.mm

Index: chrome/browser/ui/cocoa/autofill/down_arrow_popup_menu_cell_unittest.mm
diff --git a/chrome/browser/ui/cocoa/autofill/down_arrow_popup_menu_cell_unittest.mm b/chrome/browser/ui/cocoa/autofill/down_arrow_popup_menu_cell_unittest.mm
index 4d878d692f7ec44a0d2817a2c55a91fbdedb7582..25af74a0efd37ede3df385694c6fb8e13b74db7d 100644
--- a/chrome/browser/ui/cocoa/autofill/down_arrow_popup_menu_cell_unittest.mm
+++ b/chrome/browser/ui/cocoa/autofill/down_arrow_popup_menu_cell_unittest.mm
@@ -60,7 +60,7 @@ TEST_F(DownArrowPopupMenuCellTest, Defaults) {
 
   NSAttributedString* title = [cell attributedTitle];
   NSSize titleSize = [title size];
-  EXPECT_EQ(titleSize.width + [image size].width + kButtonGap,
+  EXPECT_EQ(titleSize.width + [image size].width + autofill::kButtonGap,
             [cell cellSize].width);
   EXPECT_EQ(std::max(titleSize.height, [image size].height),
             [cell cellSize].height);