From 8549c7cc31352e7d0cf89606d109f7c827ebab82 Mon Sep 17 00:00:00 2001
From: wolfbeast <mcwerewolf@wolfbeast.com>
Date: Fri, 22 Mar 2019 13:11:18 +0100
Subject: Extend origin-clean algorithm (DiD).

---
 dom/canvas/CanvasRenderingContext2D.cpp | 7 +++++++
 dom/canvas/CanvasRenderingContext2D.h   | 4 +---
 2 files changed, 8 insertions(+), 3 deletions(-)

(limited to 'dom')

diff --git a/dom/canvas/CanvasRenderingContext2D.cpp b/dom/canvas/CanvasRenderingContext2D.cpp
index a750c69b0..4849fda57 100644
--- a/dom/canvas/CanvasRenderingContext2D.cpp
+++ b/dom/canvas/CanvasRenderingContext2D.cpp
@@ -6329,6 +6329,13 @@ CanvasRenderingContext2D::ShouldForceInactiveLayer(LayerManager* aManager)
   return !aManager->CanUseCanvasLayerForSize(GetSize());
 }
 
+void CanvasRenderingContext2D::SetWriteOnly() {
+  mWriteOnly = true;
+  if (mCanvasElement) {
+    mCanvasElement->SetWriteOnly();
+  }
+}
+
 NS_IMPL_CYCLE_COLLECTION_ROOT_NATIVE(CanvasPath, AddRef)
 NS_IMPL_CYCLE_COLLECTION_UNROOT_NATIVE(CanvasPath, Release)
 
diff --git a/dom/canvas/CanvasRenderingContext2D.h b/dom/canvas/CanvasRenderingContext2D.h
index 46758ec88..d4f295a03 100644
--- a/dom/canvas/CanvasRenderingContext2D.h
+++ b/dom/canvas/CanvasRenderingContext2D.h
@@ -1156,9 +1156,7 @@ protected:
 
   // For the origin-clean algorithm (mWriteOnly == !origin-clean)
   // See https://html.spec.whatwg.org/multipage/imagebitmap-and-animations.html
-  void SetWriteOnly() {
-    mWriteOnly = true;
-  }
+  void SetWriteOnly();
 
   bool IsWriteOnly() const {
     return mWriteOnly;
-- 
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