Determine a layer's IsAffectedByPageScale property without using Layer Tree

cc/layers/layer_impl.h

 // Copyright 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CC_LAYERS_LAYER_IMPL_H_
 #define CC_LAYERS_LAYER_IMPL_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 339 matching lines @@
   gfx::PointF position() const { return position_; }
 
   void SetIsContainerForFixedPositionLayers(bool container) {
     is_container_for_fixed_position_layers_ = container;
   }
   // This is a non-trivial function in Layer.
   bool IsContainerForFixedPositionLayers() const {
     return is_container_for_fixed_position_layers_;
   }
 
-  bool IsAffectedByPageScale() const { return is_affected_by_page_scale_; }
-  void SetIsAffectedByPageScale(bool is_affected) {
-    is_affected_by_page_scale_ = is_affected;
-  }
+  bool IsAffectedByPageScale() const;
 
   gfx::Vector2dF FixedContainerSizeDelta() const;
 
   void SetPositionConstraint(const LayerPositionConstraint& constraint) {
     position_constraint_ = constraint;
   }
   const LayerPositionConstraint& position_constraint() const {
     return position_constraint_;
   }
 
@@ skipping 530 matching lines @@
   bool layer_or_descendant_has_input_handler_;
   bool sorted_for_recursion_;
   bool is_hidden_from_property_trees_;
 
   DISALLOW_COPY_AND_ASSIGN(LayerImpl);
 };
 
 }  // namespace cc
 
 #endif  // CC_LAYERS_LAYER_IMPL_H_