Skip drawing unsupported layers in forced software mode

cc/layers/nine_patch_layer_impl.cc

Index: cc/layers/nine_patch_layer_impl.cc
diff --git a/cc/layers/nine_patch_layer_impl.cc b/cc/layers/nine_patch_layer_impl.cc
index 779973575308c28f8cf224eefb16a5ea93818ecb..ba6051208cdfbfad42dd4a6157c55a6c17f43380 100644
--- a/cc/layers/nine_patch_layer_impl.cc
+++ b/cc/layers/nine_patch_layer_impl.cc
@@ -55,10 +55,16 @@ void NinePatchLayerImpl::SetLayout(gfx::Size image_bounds, gfx::Rect aperture) {
   image_aperture_ = aperture;
 }
 
+bool NinePatchLayerImpl::WillDraw(DrawMode draw_mode,
+                                  ResourceProvider* resource_provider) {
+  if (!resource_id_ || draw_mode == DRAW_MODE_RESOURCELESS_SOFTWARE)
+    return false;
+  return LayerImpl::WillDraw(draw_mode, resource_provider);
+}
+
 void NinePatchLayerImpl::AppendQuads(QuadSink* quad_sink,
                                      AppendQuadsData* append_quads_data) {
-  if (!resource_id_)
-    return;
+  DCHECK(resource_id_);
 
   SharedQuadState* shared_quad_state =
       quad_sink->UseSharedQuadState(CreateSharedQuadState());