[Incognito][Dark]Correct message card close button color

This CL corrects the message card close button color in incognito mode
under dark theme.

Bug: 1145869
Change-Id: I4803b7d9c078b7c16f4e6b39aca7be99228e0f09
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2527342Reviewed-by: Yue Zhang <yuezhanggg@chromium.org>
Commit-Queue: Zhiyuan Cai <zhiyuancai@google.com>
Cr-Commit-Position: refs/heads/master@{#825577}

chrome/android/features/tab_ui/java/src/org/chromium/chrome/browser/tasks/tab_management/TabUiColorProvider.java

@@ -225,6 +225,6 @@ public class TabUiColorProvider {
     public static ColorStateList getMessageCardCloseButtonTintList(
             Context context, boolean isIncognito) {
         return AppCompatResources.getColorStateList(context,
-                isIncognito ? R.color.default_icon_color_inverse : R.color.default_icon_color);
+                isIncognito ? R.color.default_icon_color_light : R.color.default_icon_color);
     }
 }