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-rw-r--r--dom/canvas/CanvasRenderingContext2D.h5
1 files changed, 4 insertions, 1 deletions
diff --git a/dom/canvas/CanvasRenderingContext2D.h b/dom/canvas/CanvasRenderingContext2D.h
index d5dff8f3b..848b3ee08 100644
--- a/dom/canvas/CanvasRenderingContext2D.h
+++ b/dom/canvas/CanvasRenderingContext2D.h
@@ -669,8 +669,11 @@ protected:
/**
* Disposes an old target and prepares to lazily create a new target.
+ *
+ * Parameters are the new dimensions to be used, or if either is negative,
+ * existing dimensions will be left unchanged.
*/
- void ClearTarget();
+ void ClearTarget(int32_t aWidth = -1, int32_t aHeight = -1);
/*
* Returns the target to the buffer provider. i.e. this will queue a frame for