[NTP CT] Adjust border color of module control

Per bug details, design input is to change recipes chip outlines to be
the NTP background color.

Screenshots:

Before:
https://drive.google.com/file/d/1FwoLXkDTqE9FObRvDkKq2h4RuF0wyaKY/view?usp=sharing

After:
https://drive.google.com/file/d/1eHVhGoXXE6wI-ciOgjxMheH4iQ9NhwFr/view?usp=sharing
https://drive.google.com/file/d/16D56zvYaw1q8iZiuVI7owqDXHmgOlQx5/view?usp=sharing
https://drive.google.com/file/d/1iXnXUO2PtCk0In3yjK64l8y18rcj8gl0/view?usp=sharing

Bug: 1393188
Change-Id: I04012b7e5f0d0785de19e716e94b328c7eb30528
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/4126237
Reviewed-by: Paul Adedeji <pauladedeji@google.com>
Commit-Queue: Roman Arora <romanarora@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1087461}
diff --git a/chrome/browser/ui/color/new_tab_page_color_mixer.cc b/chrome/browser/ui/color/new_tab_page_color_mixer.cc
index 617fbd1..53c45fa0 100644
--- a/chrome/browser/ui/color/new_tab_page_color_mixer.cc
+++ b/chrome/browser/ui/color/new_tab_page_color_mixer.cc
@@ -136,12 +136,12 @@
       select_topmost_element_foreground_color;
   mixer[kColorNewTabPageModuleItemBackground] = {kColorNewTabPageBackground};
   mixer[kColorNewTabPageModuleControlBorder] = SelectBasedOnWhiteNtpBackground(
-      {gfx::kGoogleGrey300}, themed_foreground_color);
+      {gfx::kGoogleGrey300}, {kColorNewTabPageBackground});
   mixer[kColorNewTabPageMostVisitedForeground] = SelectBasedOnDarkInput(
       element_background_color, SK_ColorWHITE, gfx::kGoogleGrey800);
   mixer[kColorNewTabPageMostVisitedTileBackground] =
       SelectBasedOnWhiteNtpBackground({gfx::kGoogleGrey100},
-                                      {element_background_color});
+                                      element_background_color);
   mixer[kColorNewTabPageMostVisitedTileBackgroundThemed] = {
       element_background_color};
   mixer[kColorNewTabPageOnThemeForeground] = themed_foreground_color;
@@ -393,9 +393,9 @@
   // cr_elements/cr_button/cr_button.html
   mixer[kColorNewTabPageButtonBackgroundHovered] =
       dark_mode ? ui::SetAlpha(gfx::kGoogleBlue300,
-                               /* 8% opacity */ .08 * SK_AlphaOPAQUE)
+                               /* 8% opacity */ 0.08 * SK_AlphaOPAQUE)
                 : ui::SetAlpha(gfx::kGoogleBlue500,
-                               /* 4% opacity */ .04 * SK_AlphaOPAQUE);
+                               /* 4% opacity */ 0.04 * SK_AlphaOPAQUE);
   mixer[kColorNewTabPageButtonForeground] = {accent_color};
   mixer[kColorNewTabPageCartModuleDiscountChipBackground] = {
       dark_mode ? gfx::kGoogleGrey800 : gfx::kGoogleGreen050};