From 6e0c7eda406e37eb1337fc6096890f18a1be3994 Mon Sep 17 00:00:00 2001
From: Timothy Nikkel <tnikkel@gmail.com>
Date: Tue, 9 May 2023 21:21:26 +0000
Subject: [PATCH] Bug 1831269. Remove LayerState. r=gfx-reviewers,emilio,nical

Differential Revision: https://phabricator.services.mozilla.com/D177136
---
 layout/generic/nsSubDocumentFrame.h |  2 --
 layout/painting/LayerState.h        | 29 -----------------------------
 layout/painting/moz.build           |  1 -
 layout/painting/nsDisplayList.h     |  1 -
 4 files changed, 33 deletions(-)
 delete mode 100644 layout/painting/LayerState.h

diff --git a/layout/generic/nsSubDocumentFrame.h b/layout/generic/nsSubDocumentFrame.h
index 272f597ff11d..5d98de167c5c 100644
--- a/layout/generic/nsSubDocumentFrame.h
+++ b/layout/generic/nsSubDocumentFrame.h
@@ -7,7 +7,6 @@
 #ifndef NSSUBDOCUMENTFRAME_H_
 #define NSSUBDOCUMENTFRAME_H_
 
-#include "LayerState.h"
 #include "mozilla/Attributes.h"
 #include "nsDisplayList.h"
 #include "nsAtomicContainerFrame.h"
@@ -210,7 +209,6 @@ class nsDisplayRemote final : public nsPaintedDisplayItem {
   typedef mozilla::layers::EventRegionsOverride EventRegionsOverride;
   typedef mozilla::layers::LayersId LayersId;
   typedef mozilla::layers::StackingContextHelper StackingContextHelper;
-  typedef mozilla::LayerState LayerState;
   typedef mozilla::LayoutDeviceRect LayoutDeviceRect;
   typedef mozilla::LayoutDevicePoint LayoutDevicePoint;
 
diff --git a/layout/painting/LayerState.h b/layout/painting/LayerState.h
deleted file mode 100644
index d570ae95b058..000000000000
--- a/layout/painting/LayerState.h
+++ /dev/null
@@ -1,29 +0,0 @@
-/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
-/* vim: set ts=8 sts=2 et sw=2 tw=80: */
-/* This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
-
-#ifndef LAYERSTATE_H_
-#define LAYERSTATE_H_
-
-#include <cstdint>
-
-namespace mozilla {
-
-enum class LayerState : uint8_t {
-  LAYER_NONE,
-  LAYER_INACTIVE,
-  LAYER_ACTIVE,
-  // Force an active layer even if it causes incorrect rendering, e.g.
-  // when the layer has rounded rect clips.
-  LAYER_ACTIVE_FORCE,
-  // Special layer that is metadata only.
-  LAYER_ACTIVE_EMPTY,
-  // Inactive style layer for rendering SVG effects.
-  LAYER_SVG_EFFECTS
-};
-
-}  // namespace mozilla
-
-#endif
diff --git a/layout/painting/moz.build b/layout/painting/moz.build
index 8df5368e1ba9..b5f1d02a899c 100644
--- a/layout/painting/moz.build
+++ b/layout/painting/moz.build
@@ -13,7 +13,6 @@ EXPORTS += [
     "DisplayItemClipChain.h",
     "DisplayListClipState.h",
     "HitTestInfo.h",
-    "LayerState.h",
     "MatrixStack.h",
     "nsCSSRendering.h",
     "nsCSSRenderingBorders.h",
diff --git a/layout/painting/nsDisplayList.h b/layout/painting/nsDisplayList.h
index 02ac1ddeadf2..501644867b22 100644
--- a/layout/painting/nsDisplayList.h
+++ b/layout/painting/nsDisplayList.h
@@ -18,7 +18,6 @@
 #include "FrameMetrics.h"
 #include "HitTestInfo.h"
 #include "ImgDrawResult.h"
-#include "LayerState.h"
 #include "RetainedDisplayListHelpers.h"
 #include "Units.h"
 #include "gfxContext.h"