Remove hardcoded colors from webui_tab_counter_button.cc.

Bug: 1059923
Change-Id: I006cd16002598283be2ae08c7cb3dc6a07c9b605
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3519011
Auto-Submit: Peter Kasting <pkasting@chromium.org>
Reviewed-by: Connie Wan <connily@chromium.org>
Commit-Queue: Connie Wan <connily@chromium.org>
Cr-Commit-Position: refs/heads/main@{#980848}

chrome/browser/ui/views/toolbar/webui_tab_counter_button.cc

@@ -575,14 +575,14 @@ void WebUITabCounterButton::Init() {
       WEBUI_TAB_COUNTER_CXMENU_CLOSE_TAB,
       l10n_util::GetStringUTF16(
           IDS_WEBUI_TAB_STRIP_TAB_COUNTER_CXMENU_CLOSE_TAB),
-      ui::ImageModel::FromImageSkia(gfx::CreateVectorIcon(
-          vector_icons::kCloseIcon, gfx::kFaviconSize, SK_ColorGRAY)));
+      ui::ImageModel::FromVectorIcon(vector_icons::kCloseIcon,
+                                     ui::kColorMenuIcon, gfx::kFaviconSize));
   menu_model_->AddSeparator(ui::MenuSeparatorType::NORMAL_SEPARATOR);
   menu_model_->AddItemWithIcon(
       WEBUI_TAB_COUNTER_CXMENU_NEW_TAB,
       l10n_util::GetStringUTF16(IDS_WEBUI_TAB_STRIP_TAB_COUNTER_CXMENU_NEW_TAB),
-      ui::ImageModel::FromImageSkia(
-          gfx::CreateVectorIcon(kAddIcon, gfx::kFaviconSize, SK_ColorGRAY)));
+      ui::ImageModel::FromVectorIcon(kAddIcon, ui::kColorMenuIcon,
+                                     gfx::kFaviconSize));
   menu_runner_ = std::make_unique<views::MenuRunner>(
       menu_model_.get(), views::MenuRunner::HAS_MNEMONICS |
                              views::MenuRunner::CONTEXT_MENU |