Index: third_party/WebKit/Source/core/paint/PaintInvalidator.cpp |
diff --git a/third_party/WebKit/Source/core/paint/PaintInvalidator.cpp b/third_party/WebKit/Source/core/paint/PaintInvalidator.cpp |
index 47ef71c74eebf919da0864f3e618aaae895a540f..32c4b1048798d599dba6dcc9c795d4e55adc9438 100644 |
--- a/third_party/WebKit/Source/core/paint/PaintInvalidator.cpp |
+++ b/third_party/WebKit/Source/core/paint/PaintInvalidator.cpp |
@@ -313,7 +313,10 @@ void PaintInvalidator::updateContext(const LayoutObject& object, |
context.forcedSubtreeInvalidationFlags &= PaintInvalidatorContext:: |
ForcedSubtreeFullInvalidationForStackedContents; |
} else { |
- context.forcedSubtreeInvalidationFlags = 0; |
+ // For SPv1, subtree flags don't cross paint invalidation container |
+ // boundary except for ForcedWholeTreeFullInvalidation. |
+ context.forcedSubtreeInvalidationFlags &= |
+ PaintInvalidatorContext::ForcedWholeTreeFullInvalidation; |
} |
} |