Raster display item lists via a visual rect RTree.

cc/trees/layer_tree_host_pixeltest_masks.cc

Index: cc/trees/layer_tree_host_pixeltest_masks.cc
diff --git a/cc/trees/layer_tree_host_pixeltest_masks.cc b/cc/trees/layer_tree_host_pixeltest_masks.cc
index 9ca88ff0e376c05915d2b97ed56f04b1c7319c7a..870c67909cf544cd3ba5b65b4da36d04a2ebd847 100644
--- a/cc/trees/layer_tree_host_pixeltest_masks.cc
+++ b/cc/trees/layer_tree_host_pixeltest_masks.cc
@@ -60,7 +60,7 @@ class MaskContentLayerClient : public ContentLayerClient {
     }
 
     scoped_refptr<DisplayItemList> display_list =
-        DisplayItemList::Create(PaintableRegion(), DisplayItemListSettings());
+        DisplayItemList::Create(DisplayItemListSettings());
     display_list->CreateAndAppendItem<DrawingDisplayItem>(
         PaintableRegion(), recorder.finishRecordingAsPicture());
 
@@ -360,7 +360,7 @@ class CheckerContentLayerClient : public ContentLayerClient {
     }
 
     scoped_refptr<DisplayItemList> display_list =
-        DisplayItemList::Create(PaintableRegion(), DisplayItemListSettings());
+        DisplayItemList::Create(DisplayItemListSettings());
     display_list->CreateAndAppendItem<DrawingDisplayItem>(
         PaintableRegion(), recorder.finishRecordingAsPicture());
 
@@ -398,7 +398,7 @@ class CircleContentLayerClient : public ContentLayerClient {
                        paint);
 
     scoped_refptr<DisplayItemList> display_list =
-        DisplayItemList::Create(PaintableRegion(), DisplayItemListSettings());
+        DisplayItemList::Create(DisplayItemListSettings());
     display_list->CreateAndAppendItem<DrawingDisplayItem>(
         PaintableRegion(), recorder.finishRecordingAsPicture());