Enable RGBA_4444 in GpuRasterBufferProvider

cc/trees/layer_tree_host_impl.cc

Index: cc/trees/layer_tree_host_impl.cc
diff --git a/cc/trees/layer_tree_host_impl.cc b/cc/trees/layer_tree_host_impl.cc
index d9f1a22aefd1c60effdaa1f527280a69a8ceda65..404ac6f82369f6315608b9528453b674bca8f677 100644
--- a/cc/trees/layer_tree_host_impl.cc
+++ b/cc/trees/layer_tree_host_impl.cc
@@ -2237,7 +2237,8 @@ void LayerTreeHostImpl::CreateResourceAndRasterBufferProvider(
     *raster_buffer_provider = base::MakeUnique<GpuRasterBufferProvider>(
         compositor_context_provider, worker_context_provider,
         resource_provider_.get(), settings_.use_distance_field_text,
-        msaa_sample_count, settings_.async_worker_context_enabled);
+        msaa_sample_count, settings_.renderer_settings.preferred_tile_format,
+        settings_.async_worker_context_enabled);
     return;
   }