dark_mode: Add colors for radio button.

Bug: 1133748
Change-Id: I33c8d0d97e20ba86943332d41a9ee68ae1fbf4be
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2481463Reviewed-by: Ahmed Fakhry <afakhry@chromium.org>
Commit-Queue: Min Chen <minch@chromium.org>
Cr-Commit-Position: refs/heads/master@{#818722}

ash/style/ash_color_provider.cc

@@ -222,9 +222,11 @@ SkColor AshColorProvider::GetContentLayerColor(ContentLayerType type) const {
     case ContentLayerType::kButtonIconColor:
     case ContentLayerType::kAppStateIndicatorColor:
     case ContentLayerType::kSliderColorInactive:
+    case ContentLayerType::kRadioColorInactive:
       return is_dark_mode ? gfx::kGoogleGrey200 : gfx::kGoogleGrey700;
     case ContentLayerType::kButtonLabelColorBlue:
     case ContentLayerType::kSliderColorActive:
+    case ContentLayerType::kRadioColorActive:
       return is_dark_mode ? gfx::kGoogleBlue300 : gfx::kGoogleBlue600;
     case ContentLayerType::kButtonLabelColorPrimary:
     case ContentLayerType::kButtonIconColorPrimary:

ash/style/ash_color_provider.h

@@ -115,7 +115,11 @@ class ASH_EXPORT AshColorProvider : public SessionObserver {
 
     // Color for slider.
     kSliderColorActive,
-    kSliderColorInactive
+    kSliderColorInactive,
+
+    // Color for radio button.
+    kRadioColorActive,
+    kRadioColorInactive,
   };
 
   // Types of ash styled buttons.

ash/system/dark_mode/dark_mode_detailed_view.cc

@@ -31,8 +31,17 @@ class TrayRadioButton : public views::RadioButton {
     SetCallback(views::Button::PressedCallback(listener, this));
   }
 
+  // views::RadioButton:
+  SkColor GetIconImageColor(int icon_state) const override {
+    return AshColorProvider::Get()->GetContentLayerColor(
+        icon_state & IconState::CHECKED
+            ? AshColorProvider::ContentLayerType::kRadioColorActive
+            : AshColorProvider::ContentLayerType::kRadioColorInactive);
+  }
+
   // views::RadioButton:
   void OnThemeChanged() override {
+    views::RadioButton::OnThemeChanged();
     TrayPopupItemStyle style(TrayPopupItemStyle::FontStyle::SMALL_TITLE);
     SetEnabledTextColors(style.GetTextColor());
     style.SetupLabel(label());