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 b06280ed04dbc1ccd318f1906b125c82ba05920f..55ef7bb14f877ac2202ad5f72110a1edd023e397 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; |