From 3f1ef7a67d42d5dfd93088d74480222e781e3840 Mon Sep 17 00:00:00 2001
From: wolfbeast <mcwerewolf@wolfbeast.com>
Date: Wed, 5 Jun 2019 22:11:53 +0200
Subject: Improve `origin-clean` algorithm based on our previous changes.

- Instead of trying the failing refactored Mozilla way, simply add a
check where needed building on what was put in place previously.
---
 dom/canvas/CanvasRenderingContext2D.cpp | 6 ++++++
 1 file changed, 6 insertions(+)

(limited to 'dom/canvas/CanvasRenderingContext2D.cpp')

diff --git a/dom/canvas/CanvasRenderingContext2D.cpp b/dom/canvas/CanvasRenderingContext2D.cpp
index 4849fda57..111519c71 100644
--- a/dom/canvas/CanvasRenderingContext2D.cpp
+++ b/dom/canvas/CanvasRenderingContext2D.cpp
@@ -4219,6 +4219,12 @@ struct MOZ_STACK_CLASS CanvasBidiProcessor : public nsBidiPresUtils::BidiProcess
       if (state->gradientStyles[style]) { // Gradient
         pattern = GetGradientFor(style);
       } else if (state->patternStyles[style]) { // Pattern
+        if (mCtx->mCanvasElement) {
+          CanvasUtils::DoDrawImageSecurityCheck(
+            mCtx->mCanvasElement, state->patternStyles[style]->mPrincipal,
+            state->patternStyles[style]->mForceWriteOnly,
+            state->patternStyles[style]->mCORSUsed);
+        }
         pattern = GetPatternFor(style);
       } else {
         MOZ_ASSERT(false, "Should never reach here.");
-- 
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