cc: layer_or_descendant_has_copy_request is inherited by siblings.

cc/trees/layer_tree_host_common.cc

Index: cc/trees/layer_tree_host_common.cc
diff --git a/cc/trees/layer_tree_host_common.cc b/cc/trees/layer_tree_host_common.cc
index 2af828a6b0617878b88c5e513850892128fd874d..9c68c521cdcac117d5fe8b8ed84447f886cd798d 100644
--- a/cc/trees/layer_tree_host_common.cc
+++ b/cc/trees/layer_tree_host_common.cc
@@ -769,10 +769,15 @@ static inline void RemoveSurfaceForEarlyExit(
 }
 
 struct PreCalculateMetaInformationRecursiveData {
-  bool layer_or_descendent_has_copy_request;
+  bool layer_or_descendant_has_copy_request;
 
   PreCalculateMetaInformationRecursiveData()
-      : layer_or_descendent_has_copy_request(false) {}
+      : layer_or_descendant_has_copy_request(false) {}
+
+  void Merge(const PreCalculateMetaInformationRecursiveData& data) {
+    layer_or_descendant_has_copy_request |=
+        data.layer_or_descendant_has_copy_request;
+  }
 };
 
 // Recursively walks the layer tree to compute any information that is needed
@@ -797,7 +802,9 @@ static void PreCalculateMetaInformation(
   for (size_t i = 0; i < layer->children().size(); ++i) {
     LayerType* child_layer =
         LayerTreeHostCommon::get_child_as_raw_ptr(layer->children(), i);
-    PreCalculateMetaInformation<LayerType>(child_layer, recursive_data);
+
+    PreCalculateMetaInformationRecursiveData data_for_child;
+    PreCalculateMetaInformation<LayerType>(child_layer, &data_for_child);

[piman, 2013/07/11 23:18:25]

nit: no need for <LayerType> since it'll guess the type from child_layer

[danakj, 2013/07/12 18:48:05]

Done.

 
     if (!has_delegated_content) {
       bool sublayer_transform_prevents_clip =
@@ -813,17 +820,19 @@ static void PreCalculateMetaInformation(
           !child_layer->transform().IsPositiveScaleOrTranslation())
         descendants_can_clip_selves = false;
     }
+
+    recursive_data->Merge(data_for_child);
   }
 
   if (layer->HasCopyRequest())
-    recursive_data->layer_or_descendent_has_copy_request = true;
+    recursive_data->layer_or_descendant_has_copy_request = true;
 
   layer->draw_properties().num_descendants_that_draw_content =
       num_descendants_that_draw_content;
   layer->draw_properties().descendants_can_clip_selves =
       descendants_can_clip_selves;
   layer->draw_properties().layer_or_descendant_has_copy_request =
-      recursive_data->layer_or_descendent_has_copy_request;
+      recursive_data->layer_or_descendant_has_copy_request;
 }
 
 static void RoundTranslationComponents(gfx::Transform* transform) {