cocoa browser: remove non-MD bookmark bar support

chrome/browser/ui/cocoa/bookmarks/bookmark_button_cell_unittest.mm

Index: chrome/browser/ui/cocoa/bookmarks/bookmark_button_cell_unittest.mm
diff --git a/chrome/browser/ui/cocoa/bookmarks/bookmark_button_cell_unittest.mm b/chrome/browser/ui/cocoa/bookmarks/bookmark_button_cell_unittest.mm
index 04b14932e0bf339a844f82061f6acec2305cc0c5..0f76df2569b0935a3b8d6339c17e371482149f53 100644
--- a/chrome/browser/ui/cocoa/bookmarks/bookmark_button_cell_unittest.mm
+++ b/chrome/browser/ui/cocoa/bookmarks/bookmark_button_cell_unittest.mm
@@ -202,11 +202,7 @@ - (void)mouseExited:(NSEvent*)event {
   ASSERT_TRUE(bookmark_cell.get());
 
   EXPECT_EQ(1, [gradient_cell verticalTextOffset]);
-  if (ui::MaterialDesignController::IsModeMaterial()) {
-    EXPECT_EQ(-1, [bookmark_cell verticalTextOffset]);
-  } else {
-    EXPECT_EQ(0, [bookmark_cell verticalTextOffset]);
-  }
+  EXPECT_EQ(-1, [bookmark_cell verticalTextOffset]);
 
   EXPECT_NE([bookmark_cell verticalTextOffset],
             [gradient_cell verticalTextOffset]);