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 840807efafc28841032b7312a96c91a507dffabf..8ed444c45182d69a93dde0099d2004990e088d32 100644
--- a/third_party/WebKit/Source/core/style/ComputedStyle.h
+++ b/third_party/WebKit/Source/core/style/ComputedStyle.h
@@ -1562,6 +1562,14 @@ 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; }