Use in_forced_colors web setting in Blink

This CL uses the `in_forced_colors` web setting introduced in
CL:5324688 within Blink. The web setting was introduced to remove the
reliance on the global NativeTheme web instance for the state of forced
colors in Blink.

More specifically, this change:
1.) replaces all calls to the WebThemeEngine::GetForcedColors with the
web setting
2.) copies the setting in components that require it such as svg_image
and web_page_popup
3.) updates the kForcedHighContrast switch to override the web setting
for the content shell and web tests

Bug: 1231644, 41489514
Change-Id: I04ee8c3d9e55f271728f27ed915da6f2255f87bb
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5368321
Reviewed-by: danakj <danakj@chromium.org>
Commit-Queue: Sam Davis Omekara <samomekarajr@microsoft.com>
Reviewed-by: Alison Maher <almaher@microsoft.com>
Cr-Commit-Position: refs/heads/main@{#1277687}

content/shell/browser/shell_content_browser_client.cc

@@ -560,8 +560,10 @@ void ShellContentBrowserClient::OverrideWebkitPrefs(
 
   if (base::CommandLine::ForCurrentProcess()->HasSwitch(
           switches::kForceHighContrast)) {
+    prefs->in_forced_colors = true;
     prefs->preferred_contrast = blink::mojom::PreferredContrast::kMore;
   } else {
+    prefs->in_forced_colors = false;
     prefs->preferred_contrast = blink::mojom::PreferredContrast::kNoPreference;
   }
 

content/web_test/browser/web_test_control_host.cc

@@ -816,8 +816,10 @@ void WebTestControlHost::OverrideWebkitPrefs(
 
   if (base::CommandLine::ForCurrentProcess()->HasSwitch(
           switches::kForceHighContrast)) {
+    prefs->in_forced_colors = true;
     prefs->preferred_contrast = blink::mojom::PreferredContrast::kMore;
   } else {
+    prefs->in_forced_colors = false;
     prefs->preferred_contrast = blink::mojom::PreferredContrast::kNoPreference;
   }
 }

third_party/blink/renderer/core/css/media_values.cc

@@ -5,7 +5,6 @@
 #include "third_party/blink/renderer/core/css/media_values.h"
 
 #include "third_party/blink/public/common/css/scripting.h"
-#include "third_party/blink/public/platform/web_theme_engine.h"
 #include "third_party/blink/renderer/core/css/css_resolution_units.h"
 #include "third_party/blink/renderer/core/css/css_to_length_conversion_data.h"
 #include "third_party/blink/renderer/core/css/media_feature_overrides.h"
@@ -29,7 +28,6 @@
 #include "third_party/blink/renderer/core/preferences/preference_overrides.h"
 #include "third_party/blink/renderer/platform/graphics/color_space_gamut.h"
 #include "third_party/blink/renderer/platform/network/network_state_notifier.h"
-#include "third_party/blink/renderer/platform/theme/web_theme_engine_helper.h"
 #include "third_party/blink/renderer/platform/widget/frame_widget.h"
 #include "ui/display/screen_info.h"
 
@@ -497,7 +495,7 @@ ForcedColors MediaValues::CalculateForcedColors(LocalFrame* frame) {
   std::optional<ForcedColors> override_value =
       overrides ? overrides->GetForcedColors() : std::nullopt;
   return override_value.value_or(
-      WebThemeEngineHelper::GetNativeThemeEngine()->GetForcedColors());
+      frame->GetDocument()->GetStyleEngine().GetForcedColors());
 }
 
 NavigationControls MediaValues::CalculateNavigationControls(LocalFrame* frame) {

third_party/blink/renderer/core/css/style_engine.cc

@@ -35,7 +35,6 @@
 #include "base/ranges/algorithm.h"
 #include "third_party/blink/public/mojom/frame/color_scheme.mojom-blink.h"
 #include "third_party/blink/public/mojom/timing/resource_timing.mojom-blink.h"
-#include "third_party/blink/public/platform/web_theme_engine.h"
 #include "third_party/blink/renderer/core/css/cascade_layer_map.h"
 #include "third_party/blink/renderer/core/css/check_pseudo_has_cache_scope.h"
 #include "third_party/blink/renderer/core/css/container_query_data.h"
@@ -117,7 +116,6 @@
 #include "third_party/blink/renderer/platform/heap/garbage_collected.h"
 #include "third_party/blink/renderer/platform/instrumentation/histogram.h"
 #include "third_party/blink/renderer/platform/instrumentation/tracing/trace_event.h"
-#include "third_party/blink/renderer/platform/theme/web_theme_engine_helper.h"
 #include "third_party/blink/renderer/platform/weborigin/security_origin.h"
 #include "third_party/blink/renderer/platform/wtf/vector.h"
 #include "third_party/blink/renderer/platform/wtf/wtf_size_t.h"
@@ -242,11 +240,12 @@ StyleEngine::StyleEngine(Document& document)
         document.GetSettings()->GetForceDarkModeEnabled();
     UpdateColorSchemeMetrics();
 
+    forced_colors_ = document.GetSettings()->GetInForcedColors()
+                         ? ForcedColors::kActive
+                         : ForcedColors::kNone;
     UpdateForcedBackgroundColor();
   }
 
-  forced_colors_ =
-      WebThemeEngineHelper::GetNativeThemeEngine()->GetForcedColors();
   UpdateColorScheme();
 
   // Mostly for the benefit of unit tests.
@@ -3941,13 +3940,13 @@ bool StyleEngine::SupportsDarkColorScheme() {
 
 void StyleEngine::UpdateColorScheme() {
   auto* settings = GetDocument().GetSettings();
-  auto* web_theme_engine = WebThemeEngineHelper::GetNativeThemeEngine();
-  if (!settings || !web_theme_engine) {
+  if (!settings) {
     return;
   }
 
   ForcedColors old_forced_colors = forced_colors_;
-  forced_colors_ = web_theme_engine->GetForcedColors();
+  forced_colors_ = settings->GetInForcedColors() ? ForcedColors::kActive
+                                                 : ForcedColors::kNone;
 
   mojom::blink::PreferredColorScheme old_preferred_color_scheme =
       preferred_color_scheme_;

third_party/blink/renderer/core/css/style_engine_test.cc

@@ -1965,7 +1965,7 @@ TEST_F(StyleEngineTest, MediaQueriesChangeForcedColors) {
                 GetCSSPropertyColor()));
 
   ColorSchemeHelper color_scheme_helper(GetDocument());
-  color_scheme_helper.SetForcedColors(GetDocument(), ForcedColors::kActive);
+  color_scheme_helper.SetInForcedColors(/*in_forced_colors=*/true);
   UpdateAllLifecyclePhases();
   EXPECT_EQ(Color::FromRGB(0, 128, 0),
             GetDocument().body()->GetComputedStyle()->VisitedDependentColor(
@@ -1995,9 +1995,9 @@ TEST_F(StyleEngineTest, MediaQueriesChangeForcedColorsAndPreferredColorScheme) {
     <body></body>
   )HTML");
 
-  // ForcedColors = kNone, PreferredColorScheme = kLight
+  // InForcedColors = false, PreferredColorScheme = kLight
   ColorSchemeHelper color_scheme_helper(GetDocument());
-  color_scheme_helper.SetForcedColors(GetDocument(), ForcedColors::kNone);
+  color_scheme_helper.SetInForcedColors(/*in_forced_colors=*/false);
   color_scheme_helper.SetPreferredColorScheme(
       mojom::blink::PreferredColorScheme::kLight);
   UpdateAllLifecyclePhases();
@@ -2013,14 +2013,14 @@ TEST_F(StyleEngineTest, MediaQueriesChangeForcedColorsAndPreferredColorScheme) {
             GetDocument().body()->GetComputedStyle()->VisitedDependentColor(
                 GetCSSPropertyColor()));
 
-  // ForcedColors = kActive, PreferredColorScheme = kDark
-  color_scheme_helper.SetForcedColors(GetDocument(), ForcedColors::kActive);
+  // InForcedColors = true, PreferredColorScheme = kDark
+  color_scheme_helper.SetInForcedColors(/*in_forced_colors=*/true);
   UpdateAllLifecyclePhases();
   EXPECT_EQ(Color::FromRGB(255, 165, 0),
             GetDocument().body()->GetComputedStyle()->VisitedDependentColor(
                 GetCSSPropertyColor()));
 
-  // ForcedColors = kActive, PreferredColorScheme = kLight
+  // InForcedColors = true, PreferredColorScheme = kLight
   color_scheme_helper.SetPreferredColorScheme(
       mojom::blink::PreferredColorScheme::kLight);
   UpdateAllLifecyclePhases();
@@ -2904,7 +2904,7 @@ TEST_F(StyleEngineTest, ColorSchemeBaseBackgroundChange) {
   EXPECT_EQ(Color(0x12, 0x12, 0x12),
             GetDocument().View()->BaseBackgroundColor());
 
-  color_scheme_helper.SetForcedColors(GetDocument(), ForcedColors::kActive);
+  color_scheme_helper.SetInForcedColors(/*in_forced_colors=*/true);
   UpdateAllLifecyclePhases();
   mojom::blink::ColorScheme color_scheme = mojom::blink::ColorScheme::kLight;
   Color system_background_color = LayoutTheme::GetTheme().SystemColor(
@@ -3517,7 +3517,7 @@ TEST_F(StyleEngineTest, NoRevertUseCountForForcedColors) {
   EXPECT_EQ("rgb(255, 0, 0)", ComputedValue(elem, "color")->CssText());
 
   ColorSchemeHelper color_scheme_helper(GetDocument());
-  color_scheme_helper.SetForcedColors(GetDocument(), ForcedColors::kActive);
+  color_scheme_helper.SetInForcedColors(/*in_forced_colors=*/true);
   UpdateAllLifecyclePhases();
   EXPECT_EQ(ComputedValue(ref, "color")->CssText(),
             ComputedValue(elem, "color")->CssText());
@@ -7426,7 +7426,7 @@ TEST_F(StyleEngineTest, EnsureAppRegionTriggersRelayout) {
 TEST_F(StyleEngineTest, ForcedColorsLightDark) {
   ScopedForcedColorsForTest scoped_feature(true);
   ColorSchemeHelper color_scheme_helper(GetDocument());
-  color_scheme_helper.SetForcedColors(GetDocument(), ForcedColors::kActive);
+  color_scheme_helper.SetInForcedColors(/*in_forced_colors=*/true);
   GetDocument().body()->setInnerHTML(R"HTML(
     <style>
       :root { color-scheme: light only; }

third_party/blink/renderer/core/dom/document.cc

@@ -75,7 +75,6 @@
 #include "third_party/blink/public/platform/platform.h"
 #include "third_party/blink/public/platform/task_type.h"
 #include "third_party/blink/public/platform/web_content_settings_client.h"
-#include "third_party/blink/public/platform/web_theme_engine.h"
 #include "third_party/blink/public/web/web_link_preview_triggerer.h"
 #include "third_party/blink/public/web/web_print_page_description.h"
 #include "third_party/blink/renderer/bindings/core/v8/frozen_array.h"
@@ -366,7 +365,6 @@
 #include "third_party/blink/renderer/platform/scheduler/public/frame_or_worker_scheduler.h"
 #include "third_party/blink/renderer/platform/scheduler/public/post_cross_thread_task.h"
 #include "third_party/blink/renderer/platform/text/platform_locale.h"
-#include "third_party/blink/renderer/platform/theme/web_theme_engine_helper.h"
 #include "third_party/blink/renderer/platform/web_test_support.h"
 #include "third_party/blink/renderer/platform/weborigin/origin_access_entry.h"
 #include "third_party/blink/renderer/platform/weborigin/scheme_registry.h"
@@ -9420,11 +9418,10 @@ void Document::VisionDeficiencyChanged() {
 }
 
 void Document::UpdateForcedColors() {
-  ForcedColors forced_colors =
-      RuntimeEnabledFeatures::ForcedColorsEnabled()
-          ? WebThemeEngineHelper::GetNativeThemeEngine()->GetForcedColors()
-          : ForcedColors::kNone;
-  in_forced_colors_mode_ = forced_colors != ForcedColors::kNone;
+  Settings* settings = GetSettings();
+  if (RuntimeEnabledFeatures::ForcedColorsEnabled() && settings) {
+    in_forced_colors_mode_ = settings->GetInForcedColors();
+  }
   if (in_forced_colors_mode_)
     GetStyleEngine().EnsureUAStyleForForcedColors();
 }
@@ -9445,12 +9442,8 @@ const ui::ColorProvider* Document::GetColorProviderForPainting(
     return nullptr;
   }
 
-  // TODO(crbug.com/1516529): This should be changed to use
-  // `in_forced_colors_mode_` once forced colors becomes a web setting in Blink.
-  return GetPage()->GetColorProviderForPainting(
-      color_scheme,
-      WebThemeEngineHelper::GetNativeThemeEngine()->GetForcedColors() !=
-          ForcedColors::kNone);
+  return GetPage()->GetColorProviderForPainting(color_scheme,
+                                                in_forced_colors_mode_);
 }
 
 void Document::CountUse(mojom::WebFeature feature) const {

third_party/blink/renderer/core/exported/web_page_popup_impl.cc

@@ -140,6 +140,7 @@ Page* CreatePage(ChromeClient& chrome_client, WebViewImpl& opener_web_view) {
       main_settings.GetPreferredColorScheme());
   page->GetSettings().SetForceDarkModeEnabled(
       main_settings.GetForceDarkModeEnabled());
+  page->GetSettings().SetInForcedColors(main_settings.GetInForcedColors());
 
   const MediaFeatureOverrides* media_feature_overrides =
       opener_web_view.GetPage()->GetMediaFeatureOverrides();

third_party/blink/renderer/core/exported/web_view_test.cc

@@ -608,8 +608,7 @@ TEST_F(WebViewTest, SetBaseBackgroundColorWithColorScheme) {
   web_view->SetPageBaseBackgroundColor(SK_ColorBLUE);
   EXPECT_EQ(Color(0x12, 0x12, 0x12), frame_view->BaseBackgroundColor());
 
-  color_scheme_helper.SetForcedColors(*(web_view->GetPage()),
-                                      ForcedColors::kActive);
+  color_scheme_helper.SetInForcedColors(/*in_forced_colors=*/true);
   UpdateAllLifecyclePhases();
 
   mojom::blink::ColorScheme color_scheme = mojom::blink::ColorScheme::kLight;
@@ -619,8 +618,7 @@ TEST_F(WebViewTest, SetBaseBackgroundColorWithColorScheme) {
           color_scheme, /*in_forced_colors=*/true));
   EXPECT_EQ(system_background_color, frame_view->BaseBackgroundColor());
 
-  color_scheme_helper.SetForcedColors(*(web_view->GetPage()),
-                                      ForcedColors::kNone);
+  color_scheme_helper.SetInForcedColors(/*in_forced_colors=*/false);
   UpdateAllLifecyclePhases();
   EXPECT_EQ(Color(0x12, 0x12, 0x12), frame_view->BaseBackgroundColor());
 

third_party/blink/renderer/core/highlight/highlight_style_utils.cc

@@ -131,7 +131,7 @@ std::optional<Color> DefaultForegroundColor(
           color_scheme);
     case kPseudoIdTargetText:
       return LayoutTheme::GetTheme().PlatformTextSearchColor(
-          false /* active match */, color_scheme,
+          false /* active match */, document.InForcedColorsMode(), color_scheme,
           document.GetColorProviderForPainting(color_scheme));
     case kPseudoIdSpellingError:
     case kPseudoIdGrammarError:

third_party/blink/renderer/core/layout/layout_theme.cc

@@ -147,7 +147,6 @@ LayoutTheme& LayoutTheme::GetTheme() {
 }
 
 LayoutTheme::LayoutTheme() : has_custom_focus_ring_color_(false) {
-  UpdateForcedColorsState();
 }
 
 ControlPart LayoutTheme::AdjustAppearanceWithAuthorStyle(
@@ -508,7 +507,6 @@ void LayoutTheme::AdjustSearchFieldCancelButtonStyle(
     ComputedStyleBuilder&) const {}
 
 void LayoutTheme::PlatformColorsDidChange() {
-  UpdateForcedColorsState();
   Page::PlatformColorsChanged();
 }
 
@@ -726,12 +724,14 @@ Color LayoutTheme::SystemColorFromColorProvider(
 
 Color LayoutTheme::PlatformTextSearchHighlightColor(
     bool active_match,
+    bool in_forced_colors,
     mojom::blink::ColorScheme color_scheme,
     const ui::ColorProvider* color_provider) const {
   if (active_match) {
-    if (InForcedColorsMode())
+    if (in_forced_colors) {
       return GetTheme().SystemColor(CSSValueID::kHighlight, color_scheme,
                                     color_provider);
+    }
     return Color(255, 150, 50);  // Orange.
   }
   return Color(255, 255, 0);  // Yellow.
@@ -739,11 +739,13 @@ Color LayoutTheme::PlatformTextSearchHighlightColor(
 
 Color LayoutTheme::PlatformTextSearchColor(
     bool active_match,
+    bool in_forced_colors,
     mojom::blink::ColorScheme color_scheme,
     const ui::ColorProvider* color_provider) const {
-  if (InForcedColorsMode() && active_match)
+  if (in_forced_colors && active_match) {
     return GetTheme().SystemColor(CSSValueID::kHighlighttext, color_scheme,
                                   color_provider);
+  }
   return Color::kBlack;
 }
 
@@ -813,12 +815,6 @@ Color LayoutTheme::GetCustomFocusRingColor() const {
   return custom_focus_ring_color_;
 }
 
-void LayoutTheme::UpdateForcedColorsState() {
-  in_forced_colors_mode_ =
-      WebThemeEngineHelper::GetNativeThemeEngine()->GetForcedColors() !=
-      ForcedColors::kNone;
-}
-
 bool LayoutTheme::IsAccentColorCustomized(
     mojom::blink::ColorScheme color_scheme) const {
   if (!RuntimeEnabledFeatures::CSSSystemAccentColorEnabled()) {

third_party/blink/renderer/core/layout/layout_theme.h

@@ -119,9 +119,11 @@ class CORE_EXPORT LayoutTheme : public RefCounted<LayoutTheme> {
   // Highlight and text colors for TextMatches.
   Color PlatformTextSearchHighlightColor(
       bool active_match,
+      bool in_forced_colors,
       mojom::blink::ColorScheme color_scheme,
       const ui::ColorProvider* color_provider) const;
   Color PlatformTextSearchColor(bool active_match,
+                                bool in_forced_colors,
                                 mojom::blink::ColorScheme color_scheme,
                                 const ui::ColorProvider* color_provider) const;
 
@@ -198,8 +200,6 @@ class CORE_EXPORT LayoutTheme : public RefCounted<LayoutTheme> {
   // rendered with enough contrast on the result of GetAccentColorOrDefault.
   Color GetAccentColorText(mojom::blink::ColorScheme color_scheme) const;
 
-  bool InForcedColorsMode() const { return in_forced_colors_mode_; }
-
  protected:
   // The platform selection color.
   virtual Color PlatformActiveSelectionBackgroundColor(
@@ -263,7 +263,6 @@ class CORE_EXPORT LayoutTheme : public RefCounted<LayoutTheme> {
   base::TimeDelta caret_blink_interval_ = base::Milliseconds(500);
 
   bool delegates_menu_list_rendering_ = false;
-  bool in_forced_colors_mode_ = false;
 
   // This color is expected to be drawn on a semi-transparent overlay,
   // making it more transparent than its alpha value indicates.

third_party/blink/renderer/core/paint/highlight_painter.cc

@@ -188,7 +188,7 @@ TextPaintStyle TextPaintStyleForTextMatch(const TextMatchMarker& marker,
   const mojom::blink::ColorScheme color_scheme = style.UsedColorScheme();
   const Color platform_text_color =
       LayoutTheme::GetTheme().PlatformTextSearchColor(
-          marker.IsActiveMatch(), color_scheme,
+          marker.IsActiveMatch(), document.InForcedColorsMode(), color_scheme,
           document.GetColorProviderForPainting(color_scheme));
   // Comparing against the value of the 'color' property doesn't always make
   // sense (for example for SVG <text> which paints using 'fill' and 'stroke').
@@ -464,6 +464,7 @@ void HighlightPainter::Paint(Phase phase) {
           Color color =
               LayoutTheme::GetTheme().PlatformTextSearchHighlightColor(
                   text_match_marker.IsActiveMatch(),
+                  document.InForcedColorsMode(),
                   originating_style_.UsedColorScheme(),
                   document.GetColorProviderForPainting(
                       originating_style_.UsedColorScheme()));

third_party/blink/renderer/core/svg/graphics/svg_image.cc

@@ -776,6 +776,8 @@ Image::SizeAvailability SVGImage::DataChanged(bool all_data_received) {
       // dark/light color schemes.
       page->GetSettings().SetPreferredColorScheme(
           default_settings.GetPreferredColorScheme());
+      page->GetSettings().SetInForcedColors(
+          default_settings.GetInForcedColors());
     }
     chrome_client_->InitAnimationTimer(page->GetPageScheduler()
                                            ->GetAgentGroupScheduler()

third_party/blink/renderer/core/testing/color_scheme_helper.cc

@@ -4,28 +4,24 @@
 
 #include "third_party/blink/renderer/core/testing/color_scheme_helper.h"
 
-#include "third_party/blink/public/platform/web_theme_engine.h"
 #include "third_party/blink/renderer/core/dom/document.h"
 #include "third_party/blink/renderer/core/frame/settings.h"
 #include "third_party/blink/renderer/core/page/page.h"
-#include "third_party/blink/renderer/platform/theme/web_theme_engine_helper.h"
 
 namespace blink {
 
 ColorSchemeHelper::ColorSchemeHelper(Document& document)
     : settings_(*document.GetSettings()) {
-  web_theme_engine_ = WebThemeEngineHelper::GetNativeThemeEngine();
   default_preferred_color_scheme_ = settings_.GetPreferredColorScheme();
   default_preferred_contrast_ = settings_.GetPreferredContrast();
-  default_forced_colors_ = web_theme_engine_->GetForcedColors();
+  default_in_forced_colors_ = settings_.GetInForcedColors();
 }
 
 ColorSchemeHelper::ColorSchemeHelper(Page& page)
     : settings_(page.GetSettings()) {
-  web_theme_engine_ = WebThemeEngineHelper::GetNativeThemeEngine();
   default_preferred_color_scheme_ = settings_.GetPreferredColorScheme();
   default_preferred_contrast_ = settings_.GetPreferredContrast();
-  default_forced_colors_ = web_theme_engine_->GetForcedColors();
+  default_in_forced_colors_ = settings_.GetInForcedColors();
 }
 
 ColorSchemeHelper::~ColorSchemeHelper() {
@@ -33,7 +29,7 @@ ColorSchemeHelper::~ColorSchemeHelper() {
   // original values.
   settings_.SetPreferredColorScheme(default_preferred_color_scheme_);
   settings_.SetPreferredContrast(default_preferred_contrast_);
-  web_theme_engine_->SetForcedColors(default_forced_colors_);
+  settings_.SetInForcedColors(default_in_forced_colors_);
 }
 
 void ColorSchemeHelper::SetPreferredColorScheme(
@@ -46,16 +42,8 @@ void ColorSchemeHelper::SetPreferredContrast(
   settings_.SetPreferredContrast(preferred_contrast);
 }
 
-void ColorSchemeHelper::SetForcedColors(Document& document,
-                                        ForcedColors forced_colors) {
-  web_theme_engine_->SetForcedColors(forced_colors);
-  document.ColorSchemeChanged();
-}
-
-void ColorSchemeHelper::SetForcedColors(Page& page,
-                                        ForcedColors forced_colors) {
-  web_theme_engine_->SetForcedColors(forced_colors);
-  page.ColorSchemeChanged();
+void ColorSchemeHelper::SetInForcedColors(bool in_forced_colors) {
+  settings_.SetInForcedColors(in_forced_colors);
 }
 
 void ColorSchemeHelper::SetEmulatedForcedColors(Document& document,

third_party/blink/renderer/core/testing/color_scheme_helper.h

@@ -5,7 +5,6 @@
 #ifndef THIRD_PARTY_BLINK_RENDERER_CORE_TESTING_COLOR_SCHEME_HELPER_H_
 #define THIRD_PARTY_BLINK_RENDERER_CORE_TESTING_COLOR_SCHEME_HELPER_H_
 
-#include "third_party/blink/public/common/css/forced_colors.h"
 #include "third_party/blink/public/mojom/css/preferred_color_scheme.mojom-shared.h"
 #include "third_party/blink/public/mojom/css/preferred_contrast.mojom-shared.h"
 
@@ -29,8 +28,7 @@ class ColorSchemeHelper {
   void SetPreferredColorScheme(
       mojom::PreferredColorScheme preferred_color_scheme);
   void SetPreferredContrast(mojom::PreferredContrast preferred_contrast);
-  void SetForcedColors(Document& document, ForcedColors forced_colors);
-  void SetForcedColors(Page& page, ForcedColors forced_colors);
+  void SetInForcedColors(bool in_forced_colors);
   void SetEmulatedForcedColors(Document& document, bool is_dark_theme);
 
  private:
@@ -40,7 +38,7 @@ class ColorSchemeHelper {
       mojom::PreferredColorScheme::kLight;
   mojom::PreferredContrast default_preferred_contrast_ =
       mojom::PreferredContrast::kNoPreference;
-  ForcedColors default_forced_colors_ = ForcedColors::kNone;
+  bool default_in_forced_colors_ = false;
 };
 
 }  // namespace blink

third_party/blink/renderer/core/testing/internals.cc

@@ -3399,7 +3399,7 @@ void Internals::setForcedColorsAndDarkPreferredColorScheme(Document* document) {
   color_scheme_helper_.emplace(*document);
   color_scheme_helper_->SetPreferredColorScheme(
       mojom::blink::PreferredColorScheme::kDark);
-  color_scheme_helper_->SetForcedColors(*document, ForcedColors::kActive);
+  color_scheme_helper_->SetInForcedColors(/*in_forced_colors=*/true);
   color_scheme_helper_->SetEmulatedForcedColors(*document,
                                                 /*is_dark_theme=*/false);
 }