Initial skeleton of high-contrast mode.

third_party/WebKit/Source/core/frame/LocalFrameView.cpp

 /*
  * Copyright (C) 1998, 1999 Torben Weis <weis@kde.org>
  *                     1999 Lars Knoll <knoll@kde.org>
  *                     1999 Antti Koivisto <koivisto@kde.org>
  *                     2000 Dirk Mueller <mueller@kde.org>
  * Copyright (C) 2004, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.
  *           (C) 2006 Graham Dennis (graham.dennis@gmail.com)
  *           (C) 2006 Alexey Proskuryakov (ap@nypop.com)
  * Copyright (C) 2009 Google Inc. All rights reserved.
  *
@@ skipping 3262 matching lines @@
   ForAllNonThrottledLocalFrameViews([](LocalFrameView& frame_view) {
     frame_view.Lifecycle().AdvanceTo(DocumentLifecycle::kInPaint);
   });
 
   if (RuntimeEnabledFeatures::SlimmingPaintV2Enabled()) {
     if (GetLayoutView()->Layer()->NeedsRepaint()) {
       paint_controller_->SetupRasterUnderInvalidationChecking();
       GraphicsContext graphics_context(*paint_controller_);
       if (RuntimeEnabledFeatures::PrintBrowserEnabled())
         graphics_context.SetPrinting(true);
+
+      if (Settings* settings = frame_->GetSettings()) {
+        HighContrastSettings high_contrast_settings;
+        high_contrast_settings.mode = settings->GetHighContrastMode();
+        high_contrast_settings.grayscale = settings->GetHighContrastGrayscale();
+        high_contrast_settings.contrast = settings->GetHighContrastContrast();
+        graphics_context.SetHighContrast(high_contrast_settings);
+      }
+
       Paint(graphics_context, CullRect(LayoutRect::InfiniteIntRect()));
       paint_controller_->CommitNewDisplayItems();
     }
   } else {
     // A null graphics layer can occur for painting of SVG images that are not
     // parented into the main frame tree, or when the LocalFrameView is the main
     // frame view of a page overlay. The page overlay is in the layer tree of
     // the host page and will be painted during painting of the host page.
     if (GraphicsLayer* root_graphics_layer =
             view.Compositor()->RootGraphicsLayer()) {
@@ skipping 2118 matching lines @@
 void LocalFrameView::SetAnimationHost(
     std::unique_ptr<CompositorAnimationHost> host) {
   animation_host_ = std::move(host);
 }
 
 LayoutUnit LocalFrameView::CaretWidth() const {
   return LayoutUnit(GetChromeClient()->WindowToViewportScalar(1));
 }
 
 }  // namespace blink