Raster display item lists via a visual rect RTree.

cc/playback/recording_source.cc

Index: cc/playback/recording_source.cc
diff --git a/cc/playback/recording_source.cc b/cc/playback/recording_source.cc
index 9806e9ed380d751bb028abbae86074809da8d615..46be438975e7c402c45308bcc218b219d22a091b 100644
--- a/cc/playback/recording_source.cc
+++ b/cc/playback/recording_source.cc
@@ -233,7 +233,7 @@ void RecordingSource::DetermineIfSolidColor() {
                display_list_->ApproximateOpCount());
   gfx::Size layer_size = GetSize();
   skia::AnalysisCanvas canvas(layer_size.width(), layer_size.height());
-  display_list_->Raster(&canvas, nullptr, gfx::Rect(), 1.f);
+  display_list_->Raster(&canvas, nullptr, gfx::Rect(layer_size), 1.f);
   is_solid_color_ = canvas.GetColorIfSolid(&solid_color_);
 }