Update perspective paint properties on perspective-origin changes

third_party/WebKit/Source/core/layout/LayoutBox.cpp

Index: third_party/WebKit/Source/core/layout/LayoutBox.cpp
diff --git a/third_party/WebKit/Source/core/layout/LayoutBox.cpp b/third_party/WebKit/Source/core/layout/LayoutBox.cpp
index 6c5c3933c8550867b15c31f74fc00c9f1c702ef3..1eebc1b557dab4a18f721c675e22dd59d511a614 100644
--- a/third_party/WebKit/Source/core/layout/LayoutBox.cpp
+++ b/third_party/WebKit/Source/core/layout/LayoutBox.cpp
@@ -1709,10 +1709,12 @@ void LayoutBox::frameRectChanged() {
       // overflowClipRect(). The border box rect's size equals the frame rect's
       // size so we trigger a paint property update when the frame rect changes.
       setNeedsPaintPropertyUpdate();
-    } else if (styleRef().hasTransform()) {
-      // The transform paint property's origin depends on the frame rect because
-      // transform-origin can be sized with lengths relative to the frame rect.
-      // See: PaintPropertyTreeBuilder::updateTransform(...).
+    } else if (styleRef().hasTransform() || styleRef().hasPerspective()) {
+      // Relative lengths (e.g., percentage values) in transform, perspective,
+      // transform-origin, and perspective-origin can depend on the size of the
+      // frame rect, so force a property update if it changes.
+      // TODO(pdr): We only need to update properties if there are relative
+      // lengths.
       setNeedsPaintPropertyUpdate();
     }
   }