cc: Some more cleanup and removing TODOs for validating resources.

cc/layers/tiled_layer_impl.cc

Index: cc/layers/tiled_layer_impl.cc
diff --git a/cc/layers/tiled_layer_impl.cc b/cc/layers/tiled_layer_impl.cc
index f2b2b00190cda9c9bdd46a096897c8ee9de03910..85b1115595de33d6c87e7bc6d54782d7112437f3 100644
--- a/cc/layers/tiled_layer_impl.cc
+++ b/cc/layers/tiled_layer_impl.cc
@@ -260,9 +260,6 @@ void TiledLayerImpl::AppendQuads(RenderPass* render_pass,
       float tile_height = static_cast<float>(tiler_->tile_size().height());
       gfx::Size texture_size(tile_width, tile_height);
 
-      // TODO(danakj): crbug.com/455931
-      layer_tree_impl()->resource_provider()->ValidateResource(
-          tile->resource_id());
       TileDrawQuad* quad = render_pass->CreateAndAppendDrawQuad<TileDrawQuad>();
       quad->SetNew(shared_quad_state,
                    tile_rect,
@@ -273,6 +270,7 @@ void TiledLayerImpl::AppendQuads(RenderPass* render_pass,
                    texture_size,
                    tile->contents_swizzled(),
                    false);
+      ValidateQuadResources(quad);
     }
   }
 }