cc : Stop calculating visible rects on main thread

cc/debug/rasterize_and_record_benchmark.cc

Index: cc/debug/rasterize_and_record_benchmark.cc
diff --git a/cc/debug/rasterize_and_record_benchmark.cc b/cc/debug/rasterize_and_record_benchmark.cc
index 12c3bf96063393e23a0312735e39b6638d39b533..a9cae0a1598f6464a3b40899b973125ff6b654f5 100644
--- a/cc/debug/rasterize_and_record_benchmark.cc
+++ b/cc/debug/rasterize_and_record_benchmark.cc
@@ -114,10 +114,6 @@ void RasterizeAndRecordBenchmark::RunOnLayer(PictureLayer* layer) {
   if (!layer->DrawsContent())
     return;
 
-  gfx::Rect visible_layer_rect = layer->visible_layer_rect_for_testing();
-  if (visible_layer_rect.IsEmpty())
-    return;

[ajuma, 2016/04/04 20:47:17]

This seems like the most realistic thing to do (since cc doesn't actually skip
recording layers with empty visible rects). This might change benchmark results
though, so be sure to mention this in the description.

[jaydasika, 2016/04/04 21:29:16]

Done.

-
   ContentLayerClient* painter = layer->client();
 
   for (int mode_index = 0; mode_index < RecordingSource::RECORDING_MODE_COUNT;