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 1f1931d8df4f240a5b98c7b96955be0ab89e6a7f..8f9c2786f7557343e037eb633646501a09ea983f 100644
--- a/third_party/WebKit/Source/platform/graphics/GraphicsLayer.cpp
+++ b/third_party/WebKit/Source/platform/graphics/GraphicsLayer.cpp
@@ -314,7 +314,8 @@ 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);
@@ -1184,7 +1185,7 @@ 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);