Raster display item lists via a visual rect RTree.

cc/test/fake_content_layer_client.cc

Index: cc/test/fake_content_layer_client.cc
diff --git a/cc/test/fake_content_layer_client.cc b/cc/test/fake_content_layer_client.cc
index 6370a2ef328d7048a786f061bc97e8171b0ddb95..f7a58a499ac7e9524df449274dccfddeb5a6d6b9 100644
--- a/cc/test/fake_content_layer_client.cc
+++ b/cc/test/fake_content_layer_client.cc
@@ -49,7 +49,7 @@ FakeContentLayerClient::PaintContentsToDisplayList(
   DisplayItemListSettings settings;
   settings.use_cached_picture = true;
   scoped_refptr<DisplayItemList> display_list =
-      DisplayItemList::Create(PaintableRegion(), settings);
+      DisplayItemList::Create(settings);
   SkPictureRecorder recorder;
   skia::RefPtr<SkCanvas> canvas;
   skia::RefPtr<SkPicture> picture;
@@ -74,8 +74,9 @@ FakeContentLayerClient::PaintContentsToDisplayList(
           PaintableRegion());
       item->SetNew(it->transform);
     }
-    canvas = skia::SharePtr(
-        recorder.beginRecording(it->image->width(), it->image->height()));
+    int width = it->image->width() + it->point.x();
+    int height = it->image->height() + it->point.y();
+    canvas = skia::SharePtr(recorder.beginRecording(width, height));
     canvas->drawImage(it->image.get(), it->point.x(), it->point.y(),
                       &it->paint);
     picture = skia::AdoptRef(recorder.endRecordingAsPicture());