cc: Remove low quality mode and cleanup tile versions.

cc/test/fake_picture_layer_impl.cc

Index: cc/test/fake_picture_layer_impl.cc
diff --git a/cc/test/fake_picture_layer_impl.cc b/cc/test/fake_picture_layer_impl.cc
index f2a5d5c8fab620f08cd4eb3a7402f41b44756af0..b556119c3835ed839c1d5f048e0312348974fcb9 100644
--- a/cc/test/fake_picture_layer_impl.cc
+++ b/cc/test/fake_picture_layer_impl.cc
@@ -149,8 +149,7 @@ void FakePictureLayerImpl::SetAllTilesReadyInTiling(
 
 void FakePictureLayerImpl::SetTileReady(Tile* tile) {
   ManagedTileState& state = tile->managed_state();
-  for (size_t mode_idx = 0; mode_idx < NUM_RASTER_MODES; ++mode_idx)
-    state.tile_versions[mode_idx].SetSolidColorForTesting(true);
+  state.draw_info_.SetSolidColorForTesting(true);
   DCHECK(tile->IsReadyToDraw());
 }