Make OffscreenCanvas WebGL(2) context consider taintedness of image source

third_party/WebKit/Source/modules/canvas2d/CanvasRenderingContext2D.h

 /*
  * Copyright (C) 2006, 2007, 2009, 2010, 2011, 2012 Apple Inc. All rights
  * reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 141 matching lines @@
   TreeScope* GetTreeScope() override;
   void ResourceContentChanged() override;
   void ResourceElementChanged() override;
 
   void UpdateFilterReferences(const FilterOperations&);
   void ClearFilterReferences();
 
   // BaseRenderingContext2D implementation
   bool OriginClean() const final;
   void SetOriginTainted() final;
-  bool WouldTaintOrigin(CanvasImageSource* source, ExecutionContext*) final {
-    return CanvasRenderingContext::WouldTaintOrigin(source);
+  bool WouldTaintOrigin(CanvasImageSource* source,
+                        ExecutionContext* execution_context) final {
+    return CanvasRenderingContext::WouldTaintOrigin(
+        source, execution_context->GetSecurityOrigin());
   }
 
   int Width() const final;
   int Height() const final;
 
   bool HasImageBuffer() const final;
   ImageBuffer* GetImageBuffer() const final;
 
   bool ParseColorOrCurrentColor(Color&, const String& color_string) const final;
 
@@ skipping 92 matching lines @@
 
 DEFINE_TYPE_CASTS(CanvasRenderingContext2D,
                   CanvasRenderingContext,
                   context,
                   context->Is2d() && context->canvas(),
                   context.Is2d() && context.canvas());
 
 }  // namespace blink
 
 #endif  // CanvasRenderingContext2D_h