Index: third_party/WebKit/Source/core/html/HTMLCanvasElement.h |
diff --git a/third_party/WebKit/Source/core/html/HTMLCanvasElement.h b/third_party/WebKit/Source/core/html/HTMLCanvasElement.h |
index 415355203cc247ac165ee6aeac6040fa066e5589..3f25f74d438e8de7d1d8225fc3badbbf61afa34c 100644 |
--- a/third_party/WebKit/Source/core/html/HTMLCanvasElement.h |
+++ b/third_party/WebKit/Source/core/html/HTMLCanvasElement.h |
@@ -149,6 +149,7 @@ public: |
// DocumentVisibilityObserver implementation |
void didChangeVisibilityState(PageVisibilityState) override; |
+ void willDetachDocument() override; |
// CanvasImageSource implementation |
PassRefPtr<Image> getSourceImageForCanvas(SourceImageStatus*, AccelerationHint) const override; |