Don't promote position: fixed elements with composited descendants if they don't scroll

third_party/WebKit/Source/core/layout/compositing/CompositingReasonFinder.h

Index: third_party/WebKit/Source/core/layout/compositing/CompositingReasonFinder.h
diff --git a/third_party/WebKit/Source/core/layout/compositing/CompositingReasonFinder.h b/third_party/WebKit/Source/core/layout/compositing/CompositingReasonFinder.h
index 1751807c7bb373541cdb02cea5e7e6b0db49d7d2..1fa18d9d7c9402bad216a2ce7268c9b1de0eba55 100644
--- a/third_party/WebKit/Source/core/layout/compositing/CompositingReasonFinder.h
+++ b/third_party/WebKit/Source/core/layout/compositing/CompositingReasonFinder.h
@@ -45,16 +45,16 @@ class CORE_EXPORT CompositingReasonFinder {
   static bool RequiresCompositingForTransformAnimation(const ComputedStyle&);
   static bool RequiresCompositingForTransform(const LayoutObject&);
 
+  bool RequiresCompositingForScrollDependentPosition(
+      const PaintLayer*,
+      bool ignore_lcd_text) const;
+
  private:
   bool IsMainFrame() const;
 
   CompositingReasons NonStyleDeterminedDirectReasons(
       const PaintLayer*,
       bool ignore_lcd_text) const;
-  bool RequiresCompositingForScrollDependentPosition(
-      const PaintLayer*,
-      bool ignore_lcd_text) const;
-
   LayoutView& layout_view_;
   CompositingTriggerFlags compositing_triggers_;
 };