Initial skeleton of high-contrast mode.

third_party/WebKit/Source/platform/graphics/GraphicsLayer.cpp

Index: third_party/WebKit/Source/platform/graphics/GraphicsLayer.cpp
diff --git a/third_party/WebKit/Source/platform/graphics/GraphicsLayer.cpp b/third_party/WebKit/Source/platform/graphics/GraphicsLayer.cpp
index ebb192b3203d7f7e29c8d392cc48e36ffad12108..fa6db045b4413d6299c438accfe203afc6817d9b 100644
--- a/third_party/WebKit/Source/platform/graphics/GraphicsLayer.cpp
+++ b/third_party/WebKit/Source/platform/graphics/GraphicsLayer.cpp
@@ -315,7 +315,8 @@ bool GraphicsLayer::PaintWithoutCommit(
     return false;
   }
 
-  GraphicsContext context(GetPaintController(), disabled_mode, nullptr);
+  GraphicsContext context(GetPaintController(), nullptr, disabled_mode,
+                          nullptr);
 
   previous_interest_rect_ = *interest_rect;
   client_->PaintContents(this, context, painting_phase_, *interest_rect);
@@ -1185,7 +1186,7 @@ sk_sp<PaintRecord> GraphicsLayer::CaptureRecord() {
     return nullptr;
 
   FloatRect bounds(IntRect(IntPoint(0, 0), ExpandedIntSize(Size())));
-  GraphicsContext graphics_context(GetPaintController(),
+  GraphicsContext graphics_context(GetPaintController(), nullptr,
                                    GraphicsContext::kNothingDisabled, nullptr);
   graphics_context.BeginRecording(bounds);
   GetPaintController().GetPaintArtifact().Replay(bounds, graphics_context);