Clean compositing inputs for location APIs for sticky-affected elements.

third_party/WebKit/Source/core/style/ComputedStyle.h

Index: third_party/WebKit/Source/core/style/ComputedStyle.h
diff --git a/third_party/WebKit/Source/core/style/ComputedStyle.h b/third_party/WebKit/Source/core/style/ComputedStyle.h
index c6033b5c88d6be9c45320c2ed0013d840fb9b8b5..2be75b5ebd13e5ddd505f809d88e55f572cc40df 100644
--- a/third_party/WebKit/Source/core/style/ComputedStyle.h
+++ b/third_party/WebKit/Source/core/style/ComputedStyle.h
@@ -1480,6 +1480,14 @@ class CORE_EXPORT ComputedStyle : public ComputedStyleBase,
     SET_VAR(rare_non_inherited_data_, page_size_type_, t);
   }
 
+  // sticky subtrees
+  bool IsInStickySubtree() const {
+    return rare_inherited_data_->is_in_sticky_subtree_;
+  }
+  void SetIsInStickySubtree(bool b) {
+    SET_VAR(rare_inherited_data_, is_in_sticky_subtree_, b);
+  }
+
   // Text decoration properties.
   // text-decoration-line
   static TextDecoration InitialTextDecoration() { return kTextDecorationNone; }