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Unified Diff: Source/core/layout/compositing/CompositingReasonFinder.cpp

Issue 1308273010: Adapt and reland old position sticky implementation (Closed) Base URL: https://chromium.googlesource.com/chromium/blink.git@master
Patch Set: Fix style errors and remaining layout tests. Created 5 years, 3 months ago
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Index: Source/core/layout/compositing/CompositingReasonFinder.cpp
diff --git a/Source/core/layout/compositing/CompositingReasonFinder.cpp b/Source/core/layout/compositing/CompositingReasonFinder.cpp
index b67ab287deb037fe0cfac35373bbdb880c2382a1..c3b6427a1ed66fb3a3daf01009c610039c65a155 100644
--- a/Source/core/layout/compositing/CompositingReasonFinder.cpp
+++ b/Source/core/layout/compositing/CompositingReasonFinder.cpp
@@ -163,6 +163,9 @@ CompositingReasons CompositingReasonFinder::nonStyleDeterminedDirectReasons(cons
if (requiresCompositingForPositionFixed(layer))
directReasons |= CompositingReasonPositionFixed;
+ if (layer->scrollsWithScrollAncestor())
+ directReasons |= CompositingReasonPositionSticky;
+
directReasons |= layoutObject->additionalCompositingReasons();
ASSERT(!(directReasons & CompositingReasonComboAllStyleDeterminedReasons));

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