Implement origin-clean algorithm for ImageBitmap.

This resolves %973.

1 files changed, 12 insertions, 0 deletions

diff --git a/dom/canvas/ImageBitmap.h b/dom/canvas/ImageBitmap.h
index 2119c6bda..25084b6ac 100644
--- a/dom/canvas/ImageBitmap.h
+++ b/dom/canvas/ImageBitmap.h
@@ -65,6 +65,7 @@ struct ImageBitmapCloneData final
   gfx::IntRect mPictureRect;
   bool mIsPremultipliedAlpha;
   bool mIsCroppingAreaOutSideOfSourceImage;
+  bool mWriteOnly;
 };
 
 /*
@@ -161,6 +162,10 @@ public:
   template<typename T>
   friend class MapDataIntoBufferSource;
 
+  bool IsWriteOnly() const {
+    return mWriteOnly;
+  }
+
   // Mozilla Extensions
   ImageBitmapFormat
   FindOptimalFormat(const Optional<Sequence<ImageBitmapFormat>>& aPossibleFormats,
@@ -197,6 +202,7 @@ protected:
    * CreateInternal(from ImageData) method.
    */
   ImageBitmap(nsIGlobalObject* aGlobal, layers::Image* aData,
+              bool aWriteOnly,
               bool aIsPremultipliedAlpha = true);
 
   virtual ~ImageBitmap();
@@ -280,6 +286,12 @@ protected:
    */
   bool mIsCroppingAreaOutSideOfSourceImage;
 
+  /*
+   * Write-Only flag is set to true if this image has been generated from a
+   * cross-origin source. This is the opposite of what is called 'origin-clean'
+   * in the spec.
+   */
+  bool mWriteOnly;
 };
 
 } // namespace dom