1 files changed, 5 insertions, 0 deletions
diff --git a/dom/canvas/CanvasUtils.h b/dom/canvas/CanvasUtils.h
index a69b8bd72..264b2b5bb 100644
--- a/dom/canvas/CanvasUtils.h
+++ b/dom/canvas/CanvasUtils.h
@@ -11,6 +11,7 @@
 #include "mozilla/dom/ToJSValue.h"
 #include "jsapi.h"
 #include "mozilla/FloatingPoint.h"
+#include "nsLayoutUtils.h"
 
 class nsIPrincipal;
 
@@ -156,6 +157,10 @@ DashArrayToJSVal(nsTArray<T>& dashes,
     }
 }
 
+// returns true if write-only mode must used for this principal based on
+// the incumbent global.
+bool CheckWriteOnlySecurity(bool aCORSUsed, nsIPrincipal* aPrincipal);
+
 } // namespace CanvasUtils
 } // namespace mozilla