Determine a layer's IsAffectedByPageScale property without using Layer Tree

cc/layers/layer_impl.h

Index: cc/layers/layer_impl.h
diff --git a/cc/layers/layer_impl.h b/cc/layers/layer_impl.h
index 42362c8618fb5c00467aaf1224e1bff1d65e83f1..baccc5d54db3c9c596307ee326ab54a3e786a55a 100644
--- a/cc/layers/layer_impl.h
+++ b/cc/layers/layer_impl.h
@@ -357,10 +357,7 @@ class CC_EXPORT LayerImpl : public LayerAnimationValueObserver,
     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;